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What is the Page rank algorithm? and how it helps SEO?

Again an interesting question from Anil.

Google Search Algorithm = Page Rank + Text Matching Techniques. Page Rank plays vital role in ranking web pages. But it doesn't mean that all pages having high page rank should rank at top. Google introduced and following this pagerank technology and this makes them stand out among other search engines.

Now lets digg deep into the PageRank calculation.

Google's PageRank calculation consists of more than 500 million variables and 2 billion terms. Really hard time for us to predict each n every variable they use for this. But i can list the main things which are taken into consideration and having much influence in the calcualtion formuale.

1) Internal Backlinks
2) External Backlinks
3) Bounce Rate
4) CTR
5) Domain Age

PageRank reflects Google's view of the importance of web pages. Check here for official info http://www.google.com/corporate/tech.html

The PageRank algorithm is the most popular method to rank/weight websites. PageRank can be understood as the importance of a website. The ranking algorithm is a function of on- and off-page factors. On-page factors are for example the title, description, headings and plain text. An off-page factor apart from PageRank is the anchor text (of incoming links).