Page Rank is a Google algorithm to calculate the importance of any website or web-page in Google's point of view/ . It is calculated by considering multiple number factors. # Google only knows its algorithm # PR starts from 0 to 10. PR 10 was the maximum # PR was calculated by many factors like., - backlinks - quality content - bounce rate - good navigation and many more..
PageRank is what Google uses to determine the importance of a web page. To improve your sites page rank add some Quality and keywords rich content and try to get back links from high pr sites
Now i see that Google join with Ask jeeves that use the 3rd generation of search engine determine algorithm : ExpertRank. fyuh.
Google give some points according to your wep site or web page importance in google view thats called Page rank.
What is Page Rank? It's Google's measure of link popularity... based on the quantity and quality of inbound links to a URL. It's a property of a URL in their index. It's one of over 200 ranking factors for a URL. There are actually 2 types of page rank... The "actual" or "real" page rank is only known by Google. You never know its value. It's a minor ranking factor in their algorithm. It's updated constantly. The toolbar PR is what most people talk about when they speak of page rank. It is a 0-10 logrithmic scaling of the real PR at some point in the past. It is NOT used by Google's ranking algorithm, and it is ALWAYS out of date.