Search engines often use the number of backlinks that a website has as one of the most important factors for determining that website's search engine ranking, popularity and importance. Google's description of its PageRank system, for instance, notes that "Google interprets a link from page A to page B as a vote, by page A, for page B."[6] Knowledge of this form of search engine rankings has fueled a portion of the SEO industry commonly termed linkspam, where a company attempts to place as many inbound links as possible to their site regardless of the context of the originating site. The significance of search engine rankings is pretty high, and it is regarded as a crucial parameter in online business and the conversion rate of visitors to any website, particularly when it comes to online shopping. Blog commenting, guest blogging, article submission, press release distribution, social media engagements, and forum posting can be used to increase backlinks.

On the other hand, all of the results for the PageRank engine (aside from a single secondary listing) link to the homepage of major American universities. The results are much more logical and useful in nature. If you search for “university,” are you going to want the homepages for popular universities, or random subpages from a sprinkling of colleges all over the world?

Hi Brian thank you for sharing this awesome backlinking techniques. My site is currently not ranking well. It used to be, sometime mid last year, but it suddenly got de-ranked. Not really sure why. I haven’t been participating in any blackhat techniques or anything at all. I’ll try a few of your tips and hopefully it will help my site back to its shape.

Danny, I was on the panel where Matt suggested that and I point blank asked on stage what happened when folks starting abusing the tactic and Google changed their mind if you recall (at the time, I’d seen some of the things being done I knew Google would clarify as abuse and was still a nofollow unenthusiast s a result at that time). And Matt dismissed it. So, I think you can take home two important things from that – 1. SEO tactics can always change regardless of who first endorses them and 2. Not everything Matt says is etched in stone. <3 ya Matt.
Search engines use complex mathematical algorithms to guess which websites a user seeks. In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links. Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site (B) while site E does not. Note: Percentages are rounded.
Matt, this is an excellent summary. I finally got around to reading “The Search” by John Battelle and it was very enlightening to understand much of the academia behind what led to the creation of Backrub.. er Google.Looking at how many times the project was almost shutdown due to bandwidth consumption (> 50% of what the university could offer at times) as well as webmasters being concerned that their pages would be stolen and recreated. It’s so interesting to see that issues we see today are some of the same ones that Larry and Sergey were dealing with back then. As always, thanks for the great read Matt!
What an article… thank you so much for the priceless information, we will be changing our pages around to make sure we get the highest page rank available to us, we are trying to get high page rank sites to link to us, hopefully there is more information out there to gather as we want to compete within our market to gain as much market-share as possible.
Our leadership philosophy is to both lead and be led. We derive guidance and strength from every team-member in the company no matter what rank or experience level. We invest a great deal of time and resources in recruiting and developing the best talent in the industry. Every team member at IMI is encouraged to be an emerging leader and take on responsibility outside of their normal role. That is what makes IMI great and why we continue to flourish.
Tablet - We consider tablets as devices in their own class, so when we speak of mobile devices, we generally do not include tablets in the definition. Tablets tend to have larger screens, which means that, unless you offer tablet-optimized content, you can assume that users expect to see your site as it would look on a desktop browser rather than on a smartphone browser.
It is clear that something new should emerge to cover that unfollow emptiness. Here and there it is believed that some search engines may use so-called implied links to rank the page. Implied links are, for example, references to your brand. They usually come with a tone: positive, neutral, or negative. The tone defines the reputation of your site. This reputation serves as a ranking signal to search engines.
Black hat SEO is to be avoided. This is basically link spamming. You can pay somebody peanuts to do this on your behalf and, for a very short period, it brings results. Then Google sees what’s happened, and they delist your site permanently from search engine rankings. Now, you need a new website and new content, etc.—so, black hat SEO is a terrible idea.
What an article… thank you so much for the priceless information, we will be changing our pages around to make sure we get the highest page rank available to us, we are trying to get high page rank sites to link to us, hopefully there is more information out there to gather as we want to compete within our market to gain as much market-share as possible.
Think about the words that a user might search for to find a piece of your content. Users who know a lot about the topic might use different keywords in their search queries than someone who is new to the topic. For example, a long-time football fan might search for [fifa], an acronym for the Fédération Internationale de Football Association, while a new fan might use a more general query like [football playoffs]. Anticipating these differences in search behavior and accounting for them while writing your content (using a good mix of keyword phrases) could produce positive results. Google Ads provides a handy Keyword Planner34 that helps you discover new keyword variations and see the approximate search volume for each keyword. Also, Google Search Console provides you with the top search queries your site appears for and the ones that led the most users to your site in the Performance Report35.
Provide full functionality on all devices. Mobile users expect the same functionality - such as commenting and check-out - and content on mobile as well as on all other devices that your website supports. In addition to textual content, make sure that all important images and videos are embedded and accessible on mobile devices. For search engines, provide all structured data and other metadata - such as titles, descriptions, link-elements, and other meta-tags - on all versions of the pages.
This will help you replicate their best backlinks and better understand what methods they are using to promote their website. If they are getting links through guest blogging, try to become a guest author on the same websites. If most of their links come from blog reviews, get in touch with those bloggers and offer them a trial to test your tool. Eventually, they might write a review about it.
Content is king. It always has been and it always will be. Creating insightful, engaging and unique content should be at the heart of any online marketing strategy. Too often, people simply don't obey this rule. The problem? This takes an extraordinary amount of work. However, anyone that tells you that content isn't important, is not being fully transparent with you. You cannot excel in marketing anything on the internet without having quality content.
Just think about any relationship for a moment. How long you've known a person is incredibly important. It's not the be-all-end-all, but it is fundamental to trust. If you've known someone for years and years and other people that you know who you already trust can vouch for that person, then you're far more likely to trust them, right? But if you've just met someone, and haven't really vetted them so to speak, how can you possibly trust them?
I would like to know how Google is handling relevancy with so many websites now jumping on the “no follow” wagon? Seems like just about every major website has no follow links, so with the Panda updates this year what’s happening to all that lost link power? Seem’s like this tactic will stagnate the growth of up-and-coming websites on the internet to me. Am I right here?
If you build a new site and only used Domain Authority to create links, you could EASILY have got linked from the worst page possible, even if it was from the best domain, because of the INTERNAL LINKS of the other web pages! How on earth are you going to be able to see the strength of a link if that strength depends on the internal links on an entirely different website?!

In order to be a data driven agency, we foster a culture of inspired marketing entrepreneurs that collaborate, innovate, and are constantly pushing the threshold of marketing intelligence. Our analytics team is well versed in mathematics, business analytics, multi-channel attribution modeling, creating custom analytics reporting dashboards, and performing detailed analysis and reporting for each client.
Journalists and writers are always on the lookout for experts to contribute quotes for their articles. Some (but not all) will include backlinks to their sources’ websites. Getting quotes in media outlets is a great way to not only get backlinks, but also build credibility within your industry. Even in instances where you don't get backlinks, this profile page for PMM's CEO Josh Rubin is a good example of how you can showcase your media appearances - something which both Google and your clients value when it comes to evaluating your authority.
In this new world of digital transparency brands have to be very thoughtful in how they engage with current and potential customers. Consumers have an endless amount of data at their fingertips especially through social media channels, rating and review sites, blogs, and more. Unless brands actively engage in these conversations they lose the opportunity for helping guide their brand message and addressing customer concerns.
Web design is a very technical field that requires high literacy in many different kinds of software, including image editing and website architecture programs. A designer should be comfortable with computer “languages” like HTML and stay up to date on new technological developments. The designer is also an artist, so he or she should also have a firm grasp on aesthetics, visual continuity, and image composition.
By using Internet platforms, businesses can create competitive advantage through various means. To reach the maximum potential of digital marketing, firms use social media as its main tool to create a channel of information. Through this a business can create a system in which they are able to pinpoint behavioral patterns of clients and feedback on their needs.[30] This means of content has shown to have a larger impingement on those who have a long-standing relationship with the firm and with consumers who are relatively active social media users. Relative to this, creating a social media page will further increase relation quality between new consumers and existing consumers as well as consistent brand reinforcement therefore improving brand awareness resulting in a possible rise for consumers up the Brand Awareness Pyramid.[31] Although there may be inconstancy with product images;[32] maintaining a successful social media presence requires a business to be consistent in interactions through creating a two way feed of information; firms consider their content based on the feedback received through this channel, this is a result of the environment being dynamic due to the global nature of the internet.[29] Effective use of digital marketing can result in relatively lowered costs in relation to traditional means of marketing; Lowered external service costs, advertising costs, promotion costs, processing costs, interface design costs and control costs.[32]
By using the Facebook tracking pixel or the Adwords pixel, you can help to define your audience and work to entice them to come back to your site. Let's say the didn't finish their purchase or they simply showed up and left after adding something to their shopping cart, or they filled out a lead form and disappeared, you can re-target those individuals.
We help clients increase their organic search traffic by using the latest best practices and most ethical and fully-integrated search engine optimization (SEO) techniques. Since 1999, we've partnered with many brands and executed campaigns for over 1,000 websites, helping them dominate in even highly competitive industries, via capturing placements that maximize impressions and traffic.
There are things like solo ads that you can buy or join up with JV partners to help sell whatever it is that you're peddling. But at the outset, you're going to find it difficult to succeed in the internet marketing field. Ensure that you learn the right skills along the way so that you can become an effective online marketer. It doesn't matter how slow you go, as long as you don't stop, you'll reach your goals.
I agree that the more facts that you provide and if you were to provide the complete algorithm, people would abuse it but if it were available to everyone, would it not almost force people to implement better site building and navigation policies and white hat seo simply because everyone would have the same tools to work with and an absolute standard to adhere to. 

While most search engine companies try to keep their processes a secret, their criteria for high spots on SERPs isn't a complete mystery. Search engines are successful only if they provide a user links to the best Web sites related to the user's search terms. If your site is the best skydiving resource on the Web, it benefits search engines to list the site high up on their SERPs. You just have to find a way to show search engines that your site belongs at the top of the heap. That's where search engine optimization (SEO) comes in -- it's a collection of techniques a webmaster can use to improve his or her site's SERP position.
Thanks for sharing this, Matt. I’m happy that you took the time to do so considering that you don’t have to. What I mean is, in an ideal world, there should be no such thing as SEO. It is the SE’s job to bring the right users to the right sites and it is the job of webmasters to cater to the needs of the users brought into their sites by SEs. Webmasters should not be concerned of bringing the users in themselves. (aside from offsite or sponsored marketing campaigns) The moment they do, things start to get ugly because SEs would now have to implement counter-measures. (To most SEO tactics) This becomes an unending spiral. If people only stick to their part of the equation, SEs will have more time to develop algorithms for making sure webmasters get relevant users rather than to develop algorithms for combating SEOs to ensure search users get relevant results. Just do your best in providing valuable content and Google will try their best in matching you with your users. Don’t waste time trying to second guess how Google does it so that you can present yourself to Google as having a better value than you really have. They have great engineers and they have the code—you only have a guess. At most, the SEO anyone should be doing is to follow the webmasters guidelines. It will benefit all.
Okay. Okay. There is a lot to learn. However, everyone has to start somewhere. If you're just being introduced to internet marketing, and you've become bedazzled by the glitz and the glamor of the top online income earners, know that it's not going to be easy to replicate their success. Be sure that you set your expectations the proper way. As long as you stay persistent, you can achieve your goals of generating healthy amounts of money online without becoming the victim of a scam.
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.
As you might know, backlinks and all marketing strategies are dependent on the competition and existing trends in your niche. So if the blogs and marketers in your country are still using older tactics like web 2.0 backlinks and blog comments, then does it even make sense to go for tedious strategies like outreach? Does it even warrant a good business ROI?
An essential part of any Internet marketing campaign is the analysis of data gathered from not just the campaign as a whole, but each piece of it as well. An analyst can chart how many people have visited the product website since its launch, how people are interacting with the campaign's social networking pages, and whether sales have been affected by the campaign (See also Marketing Data Analyst). This information will not only indicate whether the marketing campaign is working, but it is also valuable data to determine what to keep and what to avoid in the next campaign.
A more intelligent surfer that probabilistically hops from page to page depending on the content of the pages and query terms the surfer that it is looking for. This model is based on a query-dependent PageRank score of a page which as the name suggests is also a function of query. When given a multiple-term query, Q={q1,q2,...}, the surfer selects a q according to some probability distribution, P(q) and uses that term to guide its behavior for a large number of steps. It then selects another term according to the distribution to determine its behavior, and so on. The resulting distribution over visited web pages is QD-PageRank.[41]
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.
If you’re Matt Cutts and a billion people link to you because you’re the Spam guy at Google, writing great content is enough. For the rest of us in hypercompetitive markets, good content alone is not enough. There was nothing wrong with sculpting page rank to pages on your site that make you money as a means of boosting traffic to those pages. It’s not manipulating Google, there’s more than enough of that going on in the first page of results for most competitive keywords. Geez Matt, give the little guy a break!
Websites often employ SEO techniques to increase the number of backlinks pointing to their website. Some methods are free for use by everyone whereas some methods, like linkbaiting, require quite a bit of planning and marketing to work. There are also paid techniques to increase the number of backlinks to a target site. For example, private blog networks can be used to purchase backlinks.

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.
However, if you're going to understand online marketing, you have to understand the importance of building Google's trust. There are three core components involved here. These three core components are like the pillars of trust that comprise all of Google's 200+ ranking factor rules. Each of those rules can be categorized and cataloged into one of these three pillars of trust. If you want to rank on the first page or in the first spot, you need to focus on all three, and not just one or two out of three.
Excellent post! I’m reasonably savvy up to a certain point and have managed to get some of my health content organically ranking higher than WebMD. It’s taken a long time building strong backlinks from very powerful sites (HuffingtonPost being one of them), but I am going to take some time, plow through a few beers, and then get stuck into implementing some of these suggestions. Keep up the great work amigo. Cheers, Bill
But how do you get quoted in news articles? Websites such as HARO and ProfNet can help you to connect with journalists who have specific needs, and there are other tools that allow you to send interesting pitches to writers. Even monitoring Twitter for relevant conversations between journalists can yield opportunities to connect with writers working on pieces involving your industry.
Companies often use email marketing to re-engage past customers, but a “Where’d You Go? Want To Buy This?” message can come across as aggressive, and you want to be careful with your wording to cultivate a long-term email subscriber. This is why JetBlue’s one year re-engagement email works so well -- it uses humor to convey a sense of friendliness and fun, while simultaneously reminding an old email subscriber they might want to check out some of JetBlue’s new flight deals.
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.

Most schools / universities have just an [email protected]… or [email protected]…. email address, which goes to the reception. I don’t really know who to address this email to, as I believe a lot of the time the admin person receiving it ignore and delete it without passing it on to someone relevant, e.g. the school’s or universities’ communications manager. Hope you can help me on this one! Thanks so much in advance!
A backlink is simply a link from another domain pointing back to your site. Simple, right? Well, yes and no. Not all backlinks are created equal, and there are a few rules you need to observe in order for them to benefit your site’s ranking. For example, your link needs to be a clickable hyperlink with anchor text; for example, www. conductor .com won’t help us in link building, but www.conductor.com will.
Targeting, viewability, brand safety and invalid traffic: Targeting, viewability, brand safety and invalid traffic all are aspects used by marketers to help advocate digital advertising. Cookies are a form of digital advertising, which are tracking tools within desktop devices; causing difficulty, with shortcomings including deletion by web browsers, the inability to sort between multiple users of a device, inaccurate estimates for unique visitors, overstating reach, understanding frequency, problems with ad servers, which cannot distinguish between when cookies have been deleted and when consumers have not previously been exposed to an ad. Due to the inaccuracies influenced by cookies, demographics in the target market are low and vary (Whiteside, 2016).[42] Another element, which is affected within digital marketing, is ‘viewabilty’ or whether the ad was actually seen by the consumer. Many ads are not seen by a consumer and may never reach the right demographic segment. Brand safety is another issue of whether or not the ad was produced in the context of being unethical or having offensive content. Recognizing fraud when an ad is exposed is another challenge marketers face. This relates to invalid traffic as premium sites are more effective at detecting fraudulent traffic, although non-premium sites are more so the problem (Whiteside, 2016).[42]
There are also many keyword research tools (some free and some paid) that claim to take the effort out of this process. A popular tool for first timers is Traffic Travis, which can also analyse your competitors’ sites for their keyword optimization strategies and, as a bonus, it can deliver detailed analysis on their back-linking strategy, too. You can also use Moz.com’s incredibly useful keyword research tools – they’re the industry leader, but they come at a somewhat higher price.
At the time I was strongly advocating page rank sculting by inclusion of no follow links on “related product” links. It’s interesting to note that my proposed technique would have perhaps worked for a little while then would have lost its effectiveness. Eventualy I reached the point where my efforts delivered diminishing returns which was perhaps unavoidable.
The original Random Surfer PageRank patent from Stanford has expired. The Reasonable Surfer version of PageRank (assigned to Google) is newer than that one, and has been updated via a continuation patent at least once. The version of PageRank based upon a trusted seed set of sites (assigned to Google) has also been updated via a continuation patent and differs in many ways from the Stanford version of PageRank. It is likely that Google may be using one of the versions of PageRank that they have control over (the exclusive license to use Stanford’s version of PageRank has expired along with that patent). The updated versions of PageRank (reasonable surfer and Trusted Seeds approach) both are protected under present day patents assigned to Google, and both have been updated to reflect modern processes in how they are implemented. Because of their existence, and the expiration of the original, I would suggest that it is unlikely that the random surfer model-base PageRank is still being used.
Just a related note in passing: On October 6, 2013 Matt Cutts (Google’s head of search spam) said Google PageRank Toolbar won’t see an update before 2014. He also published this helpful video that talks more in depth about how he (and Google) define PageRank, and how your site’s internal linking structure (IE: Your siloing structure) can directly affect PageRank transfer. Here’s a link to the video: http://youtu.be/M7glS_ehpGY.
What are backlinks doing for your SEO strategy? Well, Google considers over 200 SEO ranking factors when calculating where a page should rank, but we know that backlinks are one of the top three (the other two are content and RankBrain, Google’s AI). So while you should always focus on creating high-quality content, link-building is also an important factor in ranking your pages well on Google.

Great Post, I am agree with you. currently Google keeps change in algorithmic program methods thus in gift state of affairs everybody ought to have an honest quality website, quality content. Content is quality {and ought to|and will|and may} be contemporary on your web site and conjointly it should be associated with the subject. it’ll assist you in your ranking.
The nofollow tag is being used for page rank sculpting and to stop blog spamming. In my mind this is tant amount to manipulating page rank and thus possibly ranking position in certain cases. I do post to regularly blogs and forums regarding web design and this improved my search ranking as a side effect. Whats wrong with making an active contribution to the industry blogs and being passed some Pagerank. Google needs to determine whether the post entry is relevant then decide to pass pagerank after the analysis or just decide that blog should not pass PR in any event. Whats gone wrong with the Internet when legitimate content pages do not pass PR?
If you’re just getting started with SEO, you’re likely to hear a lot about “backlinks,” “external and internal links,” or “link building.” After all, backlinks are an important SEO ranking factor for SEO success, but as a newbie, you may be wondering: what are backlinks? SEO changes all the time — do backlinks still matter? Well, wonder no more. Say hello to your definitive guide to backlinks and their significance in SEO.
(spread across a number of pages) which lists something like 1,000 restaurants in a large city with contact details and a web link to each of those restaurant’s home page. Given that the outgoing links are relevant to my content, should I or should I not be using REL=nofollow for each link given the massive quantity of them? How will my ranking for pages containing those links and pages elsewhere on my site be affected if I do or don’t include REL=nofollow for those links? My fear is that if I don’t use REL=nofollow, Google will assume my site is just a generic directory of links (given the large number of them) and will penalize me accordingly.
The green ratings bars are a measure of the importance Google’s assessment of the importance of a web page, as determined by Google’s patented PageRank technology and other factors. These PageRank bars tell you at a glance whether other people on the web consider Google considers a page to be a high-quality site worth checking out. Google itself does not evaluate or endorse websites. Rather, we measure what others on the web feel is important enough to deserve a link. And because Google does not accept payment for placement within our results, the information you see when you conduct a search is based on totally objective criteria.
But bear in mind that you can't guest post just anywhere and expect that it'll help. In fact, for years black hatters have perverted the value of guest posts by 'creating private blog networks,' which put out mass quantities of low-quality content for the sole purpose of exchanging backlinks. Google has caught on to this, and penalizes websites accordingly. So, you want to ensure that you only provide guest posts to reputable, respected websites that are relevant to your industry.

An SEO technique is considered white hat if it conforms to the search engines' guidelines and involves no deception. As the search engine guidelines[18][19][51] are not written as a series of rules or commandments, this is an important distinction to note. White hat SEO is not just about following guidelines, but is about ensuring that the content a search engine indexes and subsequently ranks is the same content a user will see. White hat advice is generally summed up as creating content for users, not for search engines, and then making that content easily accessible to the online "spider" algorithms, rather than attempting to trick the algorithm from its intended purpose. White hat SEO is in many ways similar to web development that promotes accessibility,[52] although the two are not identical.
If you really want everyone to forget about sculpting, then either ditch support for nofollow completely, or at a bare minimum, implement some type of real filter that demotes sites with excessive levels of external nofollows. The idea that the sculpting mom & pop struggling to compete is somehow a spammer, yet sites like the wiki are algorithmically rewarded for systematically cutting off the flow of juices to thousands of sites that are in no way close to the kind of sites nofollow was developed to combat, is simply insane.

Before I start this, I am using the term ‘PageRank’ as a general term fully knowing that this is not a simple issue and ‘PageRank’ and the way it is calculated (and the other numerous methods Google use) are multidimensional and complex. However, if you use PageRank to imply ‘weight’ it make it a lot simpler. Also, ‘PageRank sculpting’ (in my view) is meant to mean ‘passing weight you can control’. Now… on with the comment!


Brand awareness has been proven to work with more effectiveness in countries that are high in uncertainty avoidance, also these countries that have uncertainty avoidance; social media marketing works effectively. Yet brands must be careful not to be excessive on the use of this type of marketing, as well as solely relying on it as it may have implications that could negatively harness their image. Brands that represent themselves in an anthropomorphizing manner are more likely to succeed in situations where a brand is marketing to this demographic. "Since social media use can enhance the knowledge of the brand and thus decrease the uncertainty, it is possible that people with high uncertainty avoidance, such as the French, will particularly appreciate the high social media interaction with an anthropomorphized brand." Moreover, digital platform provides an ease to the brand and its customers to interact directly and exchange their motives virtually.[33]
The third and final stage requires the firm to set a budget and management systems; these must be measurable touchpoints, such as audience reached across all digital platforms. Furthermore, marketers must ensure the budget and management systems are integrating the paid, owned and earned media of the company.[67] The Action and final stage of planning also requires the company to set in place measurable content creation e.g. oral, visual or written online media.[68]
Also, backlinks are important for the end user. With an end user, backlinks connect searchers with information that is similar to what is being written on other resources. An example of this happens when an end user is reading a page that discusses “how child care expenses are driving women out of the workforce.” As they scroll down, they might see another link with a study on “how the rise in child care costs over the last 25 years affected women’s employment.” In this case, a backlink establishes connection points for information that a searcher may be interested in clicking. This external link creates a solid experience because it transfers the user directly to additionally desirable information if needed.

PageRank has been used to rank public spaces or streets, predicting traffic flow and human movement in these areas. The algorithm is run over a graph which contains intersections connected by roads, where the PageRank score reflects the tendency of people to park, or end their journey, on each street. This is described in more detail in "Self-organized Natural Roads for Predicting Traffic Flow: A Sensitivity Study".

[43] Katja Mayer views PageRank as a social network as it connects differing viewpoints and thoughts in a single place. People go to PageRank for information and are flooded with citations of other authors who also have an opinion on the topic. This creates a social aspect where everything can be discussed and collected to provoke thinking. There is a social relationship that exists between PageRank and the people who use it as it is constantly adapting and changing to the shifts in modern society. Viewing the relationship between PageRank and the individual through sociometry allows for an in-depth look at the connection that results.
PageRank was influenced by citation analysis, early developed by Eugene Garfield in the 1950s at the University of Pennsylvania, and by Hyper Search, developed by Massimo Marchiori at the University of Padua. In the same year PageRank was introduced (1998), Jon Kleinberg published his work on HITS. Google's founders cite Garfield, Marchiori, and Kleinberg in their original papers.[5][18]
Many webmasters have more than one website. Sometimes these websites are related, sometimes they are not. You have to also be careful about interlinking multiple websites on the same IP. If you own seven related websites, then a link to each of those websites on a page could hurt you, as it may look like to a search engine that you are trying to do something fishy. Many webmasters have tried to manipulate backlinks in this way; and too many links to sites with the same IP address is referred to as backlink bombing.
On a blog the page rank should go to the main article pages. Now it just gets “evaporated” if you use “nofollow” or scattered to all the far flung nooks and crannys which means google will not be able to see the wood for the trees. The vast majority of a site’s overall page rank will now reside in the long tail of useless pages such as commentors profile pages. This can only make it harder for google to serve up the most relevant pages.
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