SEO - (Search Engine Optimizer) - The PageRank Equation

Here is the official PageRank equation. It is calculated by solving an equation that includes each of the billions of web pages in the Google index:
PR =   0.15   +  0.85 [(PR / total links )  +  (PR / t otal links )  +  …] (y ou r  pag e) ( pag e  A) ( pag e  A) ( p age  B) ( pag e  B)
A couple of observations to note about the PR equation:
• PR is based on individual web pages – not on a website as a whole.
• The PR of each page that links to your site in turn is dependent on the PR of the pages that link to it, and so on iteratively.
• A link’s va lue (amount of PageRank or “voting power” forwarded to the linked-to page) is at most only 85% of the linking page’s PageRank value, and this value is diluted (decreased) by the number of other links on that page.
• PR has nothing to do with keywords or text in links - it is purely dependent on link quantity and link strength, as discussed previously. Some may incorrectly conclude that a link from a page with a PR = 4 and with only a
few outgoing links is worth a more than a link from a page with a PR = 6 with 100 outgoing links because for the latter, the “voting power” or value is divided up among 99 other links.
However, you must remember the logarithmic nature of actual PageRank. A link from a PR = 6 pa ge with lots of outbound  links may indeed  be worth more than  a link from a PR = 4 page that has only a few outbound links.
 

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