In the past, the PageRank shown in the Toolbar was easily manipulated. Redirection from one page to another, either via a HTTP 302 response or a "Refresh" meta tag, caused the source page to acquire the PageRank of the destination page. Hence, a new page with PR 0 and no incoming links could have acquired PR 10 by redirecting to the Google home page. This spoofing technique was a known vulnerability. Spoofing can generally be detected by performing a Google search for a source URL; if the URL of an entirely different site is displayed in the results, the latter URL may represent the destination of a redirection.
Honestly, this I’ve read your blog for about 4 or 5 years now and the more I read the less I cared about creating new content online because it feels like even following the “Google Rules” still isn’t the way to go because unlike standards, there is no standard. You guys can change your mind whenever you feel like and I can become completely screwed. So screw it. I’m done trying to get Google to find my site. With Twitter and other outlets and 60% of all Google usage is not even finding site but Spell Check, I don’t care anymore.

Should have added in my previous comment that our site has been established since 2000 and all our links have always been followable – including comment links (but all are manually edited to weed out spambots). We have never artificially cultivated backlinks but I have noticed that longstanding backlinks from established sites like government and trade organisations are changing to ‘nofollow’ (and our homepage PR has declined from 7 to 4 over the past 5 years). If webmasters of the established sites are converting to systems which automatically change links to ‘nofollow’ then soon the only followable links will be those that are paid for – and the blackhats win again.
As Rogers pointed out in his classic paper on PageRank, the biggest takeaway for us about the eigenvector piece is that it’s a type of math that let’s you work with multiple moving parts. “We can go ahead and calculate a page’s PageRank without knowing the final value of the PR of the other pages. That seems strange but, basically, each time we run the calculation we’re getting a closer estimate of the final value. So all we need to do is remember the each value we calculate and repeat the calculations lots of times until the numbers stop changing much.”
If I’m writing a page about the use of the vCard microformat on a page, it absolutely makes sense for me to link out to the definition where it was originally published, and improves user experience as well as lending authority to my arguments. Often as SEOs we get obsessed with the little things, claiming that its hard to get links on particular subjects, and that is pretty true, but its mainly our own selfishness in linking out to authority content that prevents other people giving us the same courtesy.

Let’s start with what Google says. In a nutshell, it considers links to be like votes. In addition, it considers that some votes are more important than others. PageRank is Google’s system of counting link votes and determining which pages are most important based on them. These scores are then used along with many other things to determine if a page will rank well in a search.
I work on a site that allows users to find what they are looking for by clicking links that take them deeper and deeper into the site hierarchy. Content can be categorised in lots of different ways. After about three steps the difference between the results pages shown is of significance to a user but not to a search engine. I was about to add nofollow to links that took the browser deeper than 3 levels but after this announcement I won’t be…
Now that you know that backlinks are important, how do you acquire links to your site? Link building is still critical to the success of any SEO campaign when it comes to ranking organically. Backlinks today are much different than when they were built in 7-8 years back. Simply having thousands of backlinks or only have link from one website isn’t going to affect your rank position. There are also many ways to manage and understand your backlink profile. Majestic, Buzzstream, and Moz offer tools to help you manage and optimize your link profile. seoClarity offers an integration with Majestic, the largest link index database, that integrates link profile management into your entire SEO lifecycle.   
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. 

[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.
If Google was to allow webmasters full control of their own fate it would be like giving up the farm rather than giving up to the forces of human creativity. If you feel today were in a crowded market place even with a Google’s superiority complex, wait until the web is completely machine readable and aggregated on pure laws of information. I don’t think most can comprehend the future of data management as we have yet to see readily available parsing mechanisms that evolve purely based on the principles of information theory and not merely economies of scale. Remember not too long ago when Facebook tried to change their TOS to own your links and profiles? We can see that the tragedy of the commons still shapes the decision of production with that of opting in.
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A generalization of PageRank for the case of ranking two interacting groups of objects was described in [32] In applications it may be necessary to model systems having objects of two kinds where a weighted relation is defined on object pairs. This leads to considering bipartite graphs. For such graphs two related positive or nonnegative irreducible matrices corresponding to vertex partition sets can be defined. One can compute rankings of objects in both groups as eigenvectors corresponding to the maximal positive eigenvalues of these matrices. Normed eigenvectors exist and are unique by the Perron or Perron-Frobenius theorem. Example: consumers and products. The relation weight is the product consumption rate.
There’s a lot of frustration being vented in this comments section. It is one thing to be opaque – which Google seems to be masterly at – but quite another to misdirect, which is what No Follow has turned out to be. All of us who produce content always put our readers first, but we also have to be sensible as far as on page SEO is concerned. All Google are doing with this kind of thing is to progressively direct webmasters towards optimizing for other, more reliable and transparent, ways of generating traffic (and no, that doesn’t necessarily mean Adwords, although that may be part of the intent).
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]

The first component of Google's trust has to do with age. Age is more than a number. But it's not just the age when you first registered your website. The indexed age has to do with two factors: i) the date that Google originally found your website, and; ii) what happened between the time that Google found your website and the present moment in time.
A decent article which encourages discussion and healthy debate. Reading some of the comments I see it also highlights some of the misunderstandings some people (including some SEOs) have of Google PageRank. Toolbar PageRank is not the same thing as PageRank. The little green bar (Toolbar PageRank) was never a very accurate metric and told you very little about the value of any particular web page. It may have been officially killed off earlier this year, but the truth is its been dead for many years. Real PageRank on the other hand, is at the core of Google’s algorithm and remains very important. 

In my experience this means (the key words are “not the most effective way”) a page not scored by Google (“e.g. my private link” – password protected, disallowed via robots.txt and/or noindex meta robots) whether using or not using rel=”nofollow” attribute in ‘links to’ is not factored into anything… because it can’t factor in something it isn’t allowed.
So, when you find a relevant forum, be sure that you have written an authorized profile description and toss in your main concept or word of great significance. Then study the forum, its rules, and the way it operates. Examine the forum to know whether its members share links in threads. Become a reliable person making more and more friends and placing posts interesting for the forum participants. Thanks to that you may get more internal linkage to your profile and gain authority. And, of course, threads will build your credibility.Why do you need all that?

I liken this to a paradoxical Catch-22 scenario, because it seems like without one you can't have the other. It takes money to drive traffic, but it takes traffic to make money. So don't make the mistake that millions of other online marketers make around the world. Before you attempt to scale or send any semblance of traffic to your offers, be sure to split-test things to oblivion and determine your conversion rates before diving in headfirst.


If you want to concentrate the PR into one, or a few, pages then hierarchical linking will do that. If you want to average out the PR amongst the pages then "fully meshing" the site (lots of evenly distributed links) will do that - examples 5, 6, and 7 in my above. (NB. this is where Ridings’ goes wrong, in his MiniRank model feedback loops will increase PR - indefinitely!)
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.
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.
While ordinary users were not that interested in pages' scores, SEOs of a different caliber felt that this was a great opportunity to make a difference for their customers. This obsession of SEOs with PageRank made everyone feel that this ranking signal is more or less the only important one. In spite of the fact that pages with a lower PR score can beat those with a higher score! What did we receive then, as a result?

Page Rank

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