Also given that the original reasons for implementing the ‘nofollow’ tag was to reduce comment spam (something that it really hasn’t had a great effect in combatting) – the real question I have is why did they ever take any notice of nofollow on internal links in the first place? It seems to me that in this case they made the rod for their own back.

Great article and writing in general. My company just published a 5,000 word Keyword targeting best practices guide for PPC and SEO, and we linked to your article “10 Reasons You Should Use Google Trends for More Than Just Keyword Research”. http://vabulous.com/keyword-research-targeting-for-ppc-and-seo-guide/ I would love if you checked it out and possibly shared it if you like it.


Steve, sometimes good information to users is a consolidation of very high quality links. We have over 3000 links to small business sites within the SBA as well as links to the Harvard and Yale library, academic journals, etc. But because we have the understanding that there should be no more than a hundred links in a website (more now from what Matt said) we have used nofollow on all of them out of fear that Google will penalize our site because of the amount of links.
Peter made a very good point in all of this, and Michael Martinez did in a backhanded way as well. Talking about a concept related PageRank sounds cool. It doesn’t actually have to be useful or practical, and it usually isn’t; but as long as the impression of something productive is given off, then that can be all that matters in the eyes of those who lack sufficient knowledge.

Despite this many people seem to get it wrong! In particular “Chris Ridings of www.searchenginesystems.net” has written a paper entitled “PageRank Explained: Everything you’ve always wanted to know about PageRank”, pointed to by many people, that contains a fundamental mistake early on in the explanation! Unfortunately this means some of the recommendations in the paper are not quite accurate.
[44] Matteo Pasquinelli reckons the basis for the belief that PageRank has a social component lies in the idea of attention economy. With attention economy, value is placed on products that receive a greater amount of human attention and the results at the top of the PageRank garner a larger amount of focus then those on subsequent pages. The outcomes with the higher PageRank will therefore enter the human consciousness to a larger extent. These ideas can influence decision-making and the actions of the viewer have a direct relation to the PageRank. They possess a higher potential to attract a user's attention as their location increases the attention economy attached to the site. With this location they can receive more traffic and their online marketplace will have more purchases. The PageRank of these sites allow them to be trusted and they are able to parlay this trust into increased business.
There are simple and fast random walk-based distributed algorithms for computing PageRank of nodes in a network.[33] They present a simple algorithm that takes {\displaystyle O(\log n/\epsilon )} rounds with high probability on any graph (directed or undirected), where n is the network size and {\displaystyle \epsilon } is the reset probability ( {\displaystyle 1-\epsilon } is also called as damping factor) used in the PageRank computation. They also present a faster algorithm that takes {\displaystyle O({\sqrt {\log n}}/\epsilon )} rounds in undirected graphs. Both of the above algorithms are scalable, as each node processes and sends only small (polylogarithmic in n, the network size) number of bits per round.
Although online marketing creates many opportunities for businesses to grow their presence via the Internet and build their audiences, there are also inherent challenges with these methods of marketing. First, the marketing can become impersonal, due to the virtual nature of message and content delivery to a desired audience. Marketers must inform their strategy for online marketing with a strong understanding of their customer’s needs and preferences. Techniques like surveys, user testing, and in-person conversations can be used for this purpose.
To create an effective DMP, a business first needs to review the marketplace and set 'SMART' (Specific, Measurable, Actionable, Relevant and Time-Bound) objectives.[60] They can set SMART objectives by reviewing the current benchmarks and key performance indicators (KPIs) of the company and competitors. It is pertinent that the analytics used for the KPIs be customised to the type, objectives, mission and vision of the company.[61][62]
Goals and Objectives. Clearly define your objectives in advance so you can truly measure your ROI from any programs you implement. Start simple, but don’t skip this step. Example: You may decide to increase website traffic from a current baseline of 100 visitors a day to 200 visitors over the next 30 days. Or you may want to improve your current conversion rate of one percent to two in a specified period. You may begin with top-level, aggregate numbers, but you must drill down into specific pages that can improve products, services, and business sales.
I find it amazing that youtube.com has been “nofollowing” its featured videos for last 12 months (still doing it as I type) when it now seems that this means “i dont trust this content” and “i want to page rank to flow to this content”. In fact a quick glance at a youtube page tells you that youtube are currently flushing 50% of their page rank (very approx) down the toilet on every page.
It also seems that the underlying message is that google is constantly trying to find ways to identify the value of a page to it’s users and as it does so it will promote those pages more strongly in it’s search results and demote those that offer less real value, and it does not care how much you invest in trying to game the system by following ‘the rules’. As a small web site operator with no SEO budget and little time to apply the tricks and best practice, I think this is probably a good thing.
Our digital agency offers both traditional targeted online display advertising as well as behavioral retargeting. Through an intense discovery process, our team will determine the most optimal marketing mix for your online media plan. We will leverage ad network partnerships for planning the ideal media buys and negotiating the best possible pricing.
Google's strategy works well. By focusing on the links going to and from a Web page, the search engine can organize results in a useful way. While there are a few tricks webmasters can use to improve Google standings, the best way to get a top spot is to consistently provide top quality content, which gives other people the incentive to link back to their pages.
8. Technical SEO. Technical SEO is one of the most intimidating portions of the SEO knowledge base, but it’s an essential one. Don’t let the name scare you; the most technical elements of SEO can be learned even if you don’t have any programming or website development experience. For example, you can easily learn how to update and replace your site’s robots.txt file, and with the help of an online template, you should be able to put together your sitemap efficiently.

Suppose instead that page B had a link to pages C and A, page C had a link to page A, and page D had links to all three pages. Thus, upon the first iteration, page B would transfer half of its existing value, or 0.125, to page A and the other half, or 0.125, to page C. Page C would transfer all of its existing value, 0.25, to the only page it links to, A. Since D had three outbound links, it would transfer one third of its existing value, or approximately 0.083, to A. At the completion of this iteration, page A will have a PageRank of approximately 0.458.
As for the use of nofollow as a way to keep pages that shouldn’t be indexed out of Google (as with your feed example) is terrible advice. Your use of it on your feed link does nothing. If anyone links to your feed without nofollow, then it’s going to get indexed. Things that shouldn’t be indexed need to use either robots.txt or meta robots blocking. Nofollow on links to those items isn’t a solution.
The Nielsen Global Connected Commerce Survey conducted interviews in 26 countries to observe how consumers are using the Internet to make shopping decisions in stores and online. Online shoppers are increasingly looking to purchase internationally, with over 50% in the study who purchased online in the last six months stating they bought from an overseas retailer.[23]
Despite this many people seem to get it wrong! In particular “Chris Ridings of www.searchenginesystems.net” has written a paper entitled “PageRank Explained: Everything you’ve always wanted to know about PageRank”, pointed to by many people, that contains a fundamental mistake early on in the explanation! Unfortunately this means some of the recommendations in the paper are not quite accurate.
So, the probability for the random surfer reaching one page is the sum of probabilities for the random surfer following links to this page. Now, this probability is reduced by the damping factor d. The justification within the Random Surfer Model, therefore, is that the surfer does not click on an infinite number of links, but gets bored sometimes and jumps to another page at random.

Brian, you are such an inspiration. I wonder how do you get all these hacks and then publish them for all of us. I have been reading your stuff from quite a time now, but I have a problem. Every time I read something you post I feel overwhelmed but I haven’t been really able to generate any fruitful results on any of my sites. I just don’t know where to start. Imagine I don’t even have an email list.
In today’s world, QUALITY is more important than quantity. Google penalties have caused many website owners to not only stop link building, but start link pruning instead. Poor quality links (i.e., links from spammy or off-topic sites) are like poison and can kill your search engine rankings. Only links from quality sites, and pages that are relevant to your website, will appear natural and not be subject to penalty. So never try to buy or solicit links — earn them naturally or not at all.
Hi Dean! Thanks for the ideas! They are awesome! However, I have a serious doubt about the Scholarship link. I’ve checked a few of those .edu sites.. and now that so many people have followed your tips… those .edu sites have TONS of links to niche sites… even if the link comes from a high DA site.. don’t you think it might be weird in the eyes of google? I don’t know if it might be dangerous to have a link from the same page with hundreds of low quality sites (not all of them, but some for sure).. what do you think? Thanks!
Sharpe says that you shouldn't dive into internet marketing until you decide on a niche and figure out what you're passionate about. Do you want to join the make-money-online (MMO) niche? Or do you want to engage in another niche? For example, you could sell products or online courses about blogging or search engine optimization or anything else for that matter. Keep in mind that whatever you're selling, whatever niche you're in, that you need to embed yourself there deeply.
There’s a need for a skilled SEO to assess the link structure of a site with an eye to crawling and page rank flow, but I think it’s also important to look at where people are actually surfing. The University of Indiana did a great paper called Ranking Web Sites with Real User Traffic (PDF). If you take the classic Page Rank formula and blend it with real traffic you come out with some interesting ideas……
In essence, backlinks to your website are a signal to search engines that others vouch for your content. If many sites link to the same webpage or website, search engines can infer that content is worth linking to, and therefore also worth surfacing on a SERP. So, earning these backlinks can have a positive effect on a site's ranking position or search visibility.

As they noted in their paper, pages stuffed fulled of useless keywords “often wash out any results that a user is interested in.” While we often complain when we run into spammy pages today, the issue was far worse then. In their paper they state that, “as of November 1997, only one of the top four commercial search engines finds itself (returns its own search page in response to its name in the top ten results).” That’s incredibly difficult to imagine happening now. Imagine searching for the word “Google” in that search engine, and not have it pull up www.google.com in the first page of results. And yet, that’s how bad it was 20 years ago.


Back in the ’90s, two students at Stanford named Larry Page and Sergey Brin started pondering how they could make a better search engine that didn’t get fooled by keyword stuffing. They realized that if you could measure each website’s popularity (and then cross index that with what the website was about), you could build a much more useful search engine. In 1998, they published a scientific paper in which they introduced the concept of “PageRank.” This topic was further explored in another paper that Brin and Page contributed to, “PageRank Citation Ranking: Bringing Order to the Web.”
Links still matter as part of the algorithmic secret sauce. The influence of a site’s link profile is plain to see in its search engine rankings, whether for better or worse, and changes in that link profile cause noticeable movement up or down the SERP. An SEO’s emphasis today should be on attracting links to quality content naturally, not building them en masse. (For more on proper link building today, see http://bit.ly/1XIm3vf )
This is the argument that quickly emerged about blog comments recently. Say I have an article on a blog with 5 links in the editorial copy — some of those links leading back to other content within the blog that I hope to do well. Then I get 35 comments on the article, with each comment having a link back to the commenters’ sites. That’s 40 links in all. Let’s say this particular page has $20 in PageRank to spend. Each link gets 50 cents.
If you are serious about improving web traffic to your website, we recommend you read Google Webmasters and Webmaster Guidelines. These contain the best practices to help Google (and other search engines) find, crawl, and index your website. After you have read them, you MUST try our Search Engine Optimization Tools to help you with Keyword Research, Link Building, Technical Optimization, Usability, Social Media Strategy and more.
Great article and writing in general. My company just published a 5,000 word Keyword targeting best practices guide for PPC and SEO, and we linked to your article “10 Reasons You Should Use Google Trends for More Than Just Keyword Research”. http://vabulous.com/keyword-research-targeting-for-ppc-and-seo-guide/ I would love if you checked it out and possibly shared it if you like it.
Going into network marketing? Understand that if you're not close to the top of the food chain there, your ability to generate any serious amount of income will be limited. Be wary of the hype and the sales pitches that get you thinking that it's going to work the other way. Simply understand that you're going to have to work hard no matter what you pick to do. Email marketing? Sure. You can do that. But you'll need a massive and very targeted list to make any dent.
PageRank was once available for the verified site maintainers through the Google Webmaster Tools interface. However, on October 15, 2009, a Google employee confirmed that the company had removed PageRank from its Webmaster Tools section, saying that "We've been telling people for a long time that they shouldn't focus on PageRank so much. Many site owners seem to think it's the most important metric for them to track, which is simply not true."[67] In addition, The PageRank indicator is not available in Google's own Chrome browser.
I am not worried by this; I do agree with Danny Sullivan (Great comment Danny, best comment I have read in a long time). I will not be changing much on my site re: linking but it is interesting too see that Google took over a year to tell us regarding the change, but was really happy to tell us about rel=”nofollow” in the first place and advised us all to use it.
Moreover, the PageRank mechanism is entirely general, so it can applied to any graph or network in any field. Currently, the PR formula is used in bibliometrics, social and information network analysis, and for link prediction and recommendation. It's even used for system analysis of road networks, as well as biology, chemistry, neuroscience, and physics.
And my vital question about Amazon affiliate links. I think many people also wonder about it as well. I have several blogs where I solely write unique content reviews about several Amazon products, nothing more. As you know, all these links are full of tags, affiliate IDs whatsoever (bad in SEO terms). Should I nofollow them all or leave as they are?
I love the broken-link building method because it works perfectly to create one-way backlinks. The technique involves contacting a webmaster to report broken links on his/her website. At the same time, you recommend other websites to replace that link. And here, of course, you mention your own website. Because you are doing the webmaster a favor by reporting the broken links, the chances of a backlink back to your website are high.
If you don’t want to rebuild an expired domain, just take its backlinks and allow the linkers to be aware of the “to-dead-resource” linking. You can ask a link-builder to replace non-working links with your website’s one. If the content is relevant, you can try to restore it. Be sure that you can make it better than it was before. Reach out and inform the link-builder about the renewed content.

Email marketing is the practice of nurturing leads and driving sales through email communications with your customers. Like social media, the goal is to remind users that you’re here and your product is waiting. Unlike social media, however, you can be a lot more aggressive with your sales techniques, as people expect that email marketing will contain offers, product announcements and calls to action.


Backlinks can be time-consuming to earn. New sites or those expanding their keyword footprint may find it difficult to know where to start when it comes to link building. That's where competitive backlink research comes in: By examining the backlink profile (the collection of pages and domains linking to a website) to a competitor that's already ranking well for your target keywords, you can gain insight about the link building that may have helped them. A tool like Link Explorer can help uncover these links so you can and target those domains in your own link building campaigns.
In February 2011, Google announced the Panda update, which penalizes websites containing content duplicated from other websites and sources. Historically websites have copied content from one another and benefited in search engine rankings by engaging in this practice. However Google implemented a new system which punishes sites whose content is not unique.[35] The 2012 Google Penguin attempted to penalize websites that used manipulative techniques to improve their rankings on the search engine.[36] Although Google Penguin has been presented as an algorithm aimed at fighting web spam, it really focuses on spammy links[37] by gauging the quality of the sites the links are coming from. The 2013 Google Hummingbird update featured an algorithm change designed to improve Google's natural language processing and semantic understanding of web pages. Hummingbird's language processing system falls under the newly recognised term of 'Conversational Search' where the system pays more attention to each word in the query in order to better match the pages to the meaning of the query rather than a few words [38]. With regards to the changes made to search engine optimization, for content publishers and writers, Hummingbird is intended to resolve issues by getting rid of irrelevant content and spam, allowing Google to produce high-quality content and rely on them to be 'trusted' authors.
Once you understand how everything works, and your expectations are set the right way, decide what you want to do. Do you want to become an affiliate marketer? Do you want to be a network marketer? Do you want to become a blogger and sell your own products? Squeeze pages, which are glorified sales pages that attract people and direct their attention towards a single action of providing their email address, are created in a variety of methods. The better they are, the more likely they'll convert.

If you are serious about improving web traffic to your website, we recommend you read Google Webmasters and Webmaster Guidelines. These contain the best practices to help Google (and other search engines) find, crawl, and index your website. After you have read them, you MUST try our Search Engine Optimization Tools to help you with Keyword Research, Link Building, Technical Optimization, Usability, Social Media Strategy and more.
Suppose instead that page B had a link to pages C and A, page C had a link to page A, and page D had links to all three pages. Thus, upon the first iteration, page B would transfer half of its existing value, or 0.125, to page A and the other half, or 0.125, to page C. Page C would transfer all of its existing value, 0.25, to the only page it links to, A. Since D had three outbound links, it would transfer one third of its existing value, or approximately 0.083, to A. At the completion of this iteration, page A will have a PageRank of approximately 0.458.
How does this all relate to disallows in the robots.txt? My ecom site has 12,661 pages disallowed because we got nailed for duplicate content. We sale batteries so revisons to each battery where coming up as duplicate content. Is PageRank being sent (and ignored) to these internal disallowed links as well? One of our category levels has hundreds of links to different series found under models, the majority of these series are disallowed. If PageRank acts the same with disallows as it does with nofollows, are these disallowed links are hurting our
Another illicit practice is to place "doorway" pages loaded with keywords on the client's site somewhere. The SEO promises this will make the page more relevant for more queries. This is inherently false since individual pages are rarely relevant for a wide range of keywords. More insidious, however, is that these doorway pages often contain hidden links to the SEO's other clients as well. Such doorway pages drain away the link popularity of a site and route it to the SEO and its other clients, which may include sites with unsavory or illegal content.
Another reason to achieve quality backlinks is to entice visitors to come to your website. You can't build a website, and then expect that people will find your website without pointing the way. You will probably have to get the word out there about your site. One way webmasters got the word out used to be through reciprocal linking. Let's talk about reciprocal linking for a moment.

Yes, the more links on a page the smaller the amount of page rank it can pass on to each, but that was as it was before. With regard to what happens to the ‘missing’ page rank, it seems that if this is the case all over the Internet, and it will be, the total amount of page rank flow is reduced the same all over so you don’t need as much page rank flow to your good links to maintain relative position.
Backlinks take place across the Internet when one website mentions another website and links to it. Also, referred to as “incoming links,” backlinks make their connection through external websites. These links from outside domains point to pages on your own domain. Whenever backlinks occur, it is like receiving a vote for a webpage. The more votes you get from the authoritative sites creates a positive effect on a site’s ranking and search visibility.
But if you do it properly, it can be worth your money. Also, press releases can be much more than just a block of text. In December 2018, we ran a press release through Business Wire that had multiple backlinks, stylized call outs, and even a video! If you put effort into them, press releases can be not just a source of backlinks, but also serve as a great marketing piece as well.
9. Troubleshooting and adjustment. In your first few years as a search optimizer, you’ll almost certainly run into the same problems and challenges everyone else does; your rankings will plateau, you’ll find duplicate content on your site, and you’ll probably see significant ranking volatility. You’ll need to know how to diagnose and address these problems if you don’t want them to bring down the effectiveness of your campaign.
When Site A links to your web page, Google sees this as Site A endorsing, or casting a vote for, your page. Google takes into consideration all of these link votes (i.e., the website’s link profile) to draw conclusions about the relevance and significance of individual webpages and your website as a whole. This is the basic concept behind PageRank.
The paper’s authors noted that AltaVista (on the right) returned a rather random assortment of search results–rather obscure optical physics department of the University of Oregon, the campus networking group at Carnegie Mellon, Wesleyan’s computer science group, and then a page for one of the campuses of a Japanese university. Interestingly, none of the first six results return the homepage of a website

I first discovered Sharpe years ago online. His story was one of the most sincere and intriguing tales that any one individual could convey. It was real. It was heartfelt. It was passionate. And it was a story of rockbottom failure. It encompassed a journey that mentally, emotionally and spiritually crippled him in the early years of his life. As someone who left home at the age of 14, had a child at 16, became addicted to heroin at 20 and clean four long years later, the cards were definitely stacked up against him.
Advertising with Google won't have any effect on your site's presence in our search results. Google never accepts money to include or rank sites in our search results, and it costs nothing to appear in our organic search results. Free resources such as Search Console, the official Webmaster Central blog, and our discussion forum can provide you with a great deal of information about how to optimize your site for organic search.
A backlink is a reference comparable to a citation. The quantity, quality, and relevance of backlinks for a web page are among the factors that search engines like Google evaluate in order to estimate how important the page is.[2][3] PageRank calculates the score for each web page based on how all the web pages are connected among themselves, and is one of the variables that Google Search uses to determine how high a web page should go in search results.[4] This weighting of backlinks is analogous to citation analysis of books, scholarly papers, and academic journals.[1][3] A Topical PageRank has been researched and implemented as well, which gives more weight to backlinks coming from the page of a same topic as a target page. [5]
That type of earth-shattering failure and pain really does a number on a person. Getting clean and overcoming those demons isn't as simple as people make it out to be. You need to have some serious deep-down reasons on why you must succeed at all costs. You have to be able to extricate yourself from the shackles of bad habits that have consumed you during your entire life. And that's precisely what Sharpe did.
Matt, as you know, I was kind of annoyed when you suggested sculpting to a room full of SEOs back in 2007. We’d been told over the years to do things for humans, not to overly worry about having to do stuff for search engines — and suddenly, here you were suggesting that SEOs could flow PageRank to their most “important” pages. I’d figured Google had long since been smart enough to decide for itself what percentage of a page’s PageRank spend to assign to a particular link. That assumption didn’t just come out of the blue — it came from things Google had hinted at over the years. So being told to start overtly flowing around the PageRank? It seemed counter-productive.
And if you really want to know what are the most important, relevant pages to get links from, forget PageRank. Think search rank. Search for the words you’d like to rank for. See what pages come up tops in Google. Those are the most important and relevant pages you want to seek links from. That’s because Google is explicitly telling you that on the topic you searched for, these are the best.
Retargeting is another way that we can close the conversion loop and capitalize on the traffic gained from the overall marketing campaign. Retargeting is a very powerful display advertising tool to keep your brand top of mind and keep them coming back. We track every single touch point up to the ultimate conversions and use that data to make actionable recommendations for further campaign optimization.
Another reason to achieve quality backlinks is to entice visitors to come to your website. You can't build a website, and then expect that people will find your website without pointing the way. You will probably have to get the word out there about your site. One way webmasters got the word out used to be through reciprocal linking. Let's talk about reciprocal linking for a moment.
PageRank is only a score that represents the importance of a page, as Google estimates it (By the way, that estimate of importance is considered to be Google’s opinion and protected in the US by the First Amendment. When Google was once sued over altering PageRank scores for some sites, a US court ruled: “PageRanks are opinions — opinions of the significance of particular Web sites as they correspond to a search query….the court concludes Google’s PageRanks are entitled to full constitutional protection.)

I’m in the wedding industry and recently a Wedding SEO Company began touting PageRank sculpting as the missing link for SEO. So naturally I got intrigued and searched for your response to PageRank sculpting and your answer for anything SEO-related is always the same. “Create new, fresh, and exciting content, and organically the links and your audience will grow.”


When Site A links to your web page, Google sees this as Site A endorsing, or casting a vote for, your page. Google takes into consideration all of these link votes (i.e., the website’s link profile) to draw conclusions about the relevance and significance of individual webpages and your website as a whole. This is the basic concept behind PageRank.
As an internationally recognized Search Engine Marketing agency, we have the team, technology, and skills to manage large budget PPC campaigns with thousands of keywords. We have the ability to manage enterprise level accounts in multiple languages. IMI is also partner with Marin Software to provide our clients with the best possible advertising management platform, reporting dashboard, attribution modeling, and reporting.
7. Keyword research. Specific target keywords aren’t as important for SEO success as they used to be, now that Google search is fueled by semantic and contextual understanding, but you should still be able to identify both head keyword (short, high-volume keywords) and long-tail keyword (longer, conversational, low-volume keywords) targets to guide the direction of your campaign.

The truth? Today, rising above the noise and achieving any semblance of visibility has become a monumental undertaking. While we might prevail at searching, we fail at being found. How are we supposed to get notice while swimming in a sea of misinformation and disinformation? We've become immersed in this guru gauntlet where one expert after another is attempting to teach us how we can get the proverbial word out about our businesses and achieve visibility to drive more leads and sales, but we all still seem to be lost.
Try using Dribble to find designers with good portfolios. Contact them directly by upgrading your account to PRO status, for just $20 a year. Then simply use the search filter and type "infographics." After finding someone you like, click on "hire me" and send a message detailing your needs and requesting a price. Fiver is another place to find great designers willing to create inexpensive infographics.
One thing is certain: interlinking sites doesn't help you from a search engine standpoint. The only reason you may want to interlink your sites in the first place might be to provide your visitors with extra resources to visit. In this case, it would probably be okay to provide visitors with a link to another of your websites, but try to keep many instances of linking to the same IP address to a bare minimum. One or two links on a page here and there probably won't hurt you.

This will give you an indication of how many times a search is performed in a month (low numbers are not very useful unless there is a very clear buying signal in the keyphrase – working hard for five hits a month is not recommended in most cases) and how much the phrase is “worth” per click to advertisers (e.g., how much someone will pay to use that keyphrase). The more it’s worth, the more likely it is that the phrase is delivering business results for someone.
At one point, backlinks developed a reputation of damaging a site’s credibility through search engines. This is due to “black hat” SEO practices would add 5,000 links to a website overnight (a practice that is still used today). While the website would launch to the top of search ranking results for a few weeks, it wouldn’t stay there, and the site’s credibility would be damaged because a few dozen servers with thousands of useless websites existed for the sole purpose of creating backlinks.
There is much discussion in these last few months about reciprocal linking. In the last Google update, reciprocal links were one of the targets of the search engine's latest filter. Many webmasters had agreed upon reciprocal link exchanges, in order to boost their site's rankings with the sheer number of inbound links. In a link exchange, one webmaster places a link on his website that points to another webmasters website, and vice versa. Many of these links were simply not relevant, and were just discounted. So while the irrelevant inbound link was ignored, the outbound links still got counted, diluting the relevancy score of many websites. This caused a great many websites to drop off the Google map.
In order to engage customers, retailers must shift from a linear marketing approach of one-way communication to a value exchange model of mutual dialogue and benefit-sharing between provider and consumer.[21] Exchanges are more non-linear, free flowing, and both one-to-many or one-on-one.[5] The spread of information and awareness can occur across numerous channels, such as the blogosphere, YouTube, Facebook, Instagram, Snapchat, Pinterest, and a variety of other platforms. Online communities and social networks allow individuals to easily create content and publicly publish their opinions, experiences, and thoughts and feelings about many topics and products, hyper-accelerating the diffusion of information.[22] 

Another illicit practice is to place "doorway" pages loaded with keywords on the client's site somewhere. The SEO promises this will make the page more relevant for more queries. This is inherently false since individual pages are rarely relevant for a wide range of keywords. More insidious, however, is that these doorway pages often contain hidden links to the SEO's other clients as well. Such doorway pages drain away the link popularity of a site and route it to the SEO and its other clients, which may include sites with unsavory or illegal content.
6. Measurement and analysis. You won’t get far in SEO unless you know how to measure your results, interpret those results, and use your analysis to make meaningful changes to your approach. The best tool for the job is still Google Analytics, especially if you’re new to the game. Spend some time experimenting with different metrics and reports, and read up on Analytics knowledge base articles. There’s a deep world to dive into.
When an Internet user starts searching for something, he/she tries to solve some particular problem or achieve something. Your prior aim is to help them find a good solution. Don’t be obsessed with search volume only. Think about the user’s needs. There is no difference between 40,000 and 1,000 word posts and articles when we speak about their value. Try to create high-quality content and don’t pay any attention to certain stereotypes.

Just like the new structure on JavaScript links and them now carrying weight and being crawlable, the PageRank sculpting change is understandable. Google now can and wants to index more of the web (JavaScript link change). Google wants to reverse a method that can only help people in the know (PageRank sculpting change). Logically, all is very understandable.
When would this be useful? If your site has a blog with public commenting turned on, links within those comments could pass your reputation to pages that you may not be comfortable vouching for. Blog comment areas on pages are highly susceptible to comment spam. Nofollowing these user-added links ensures that you're not giving your page's hard-earned reputation to a spammy site.
“So what happens when you have a page with “ten PageRank points” and ten outgoing links, and five of those links are nofollowed? Let’s leave aside the decay factor to focus on the core part of the question. Originally, the five links without nofollow would have flowed two points of PageRank each (in essence, the nofollowed links didn’t count toward the denominator when dividing PageRank by the outdegree of the page). More than a year ago, Google changed how the PageRank flows so that the five links without nofollow would flow one point of PageRank each.”
PageRank was developed by Google founders Larry Page and Sergey Brin at Stanford. In fact the name. PageRank is a likely play on Larry Page's name. At the time that Page and Brin met, early search engines typically linked to pages that had the highest keyword density, which meant people could game the system by repeating the same phrase over and over to attract higher search page results. Sometimes web designers would even put hidden text on pages to repeat phrases. 
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