page rank - explanation

Many of new bloggers dont know what is page rank? PageRank is what Google uses to determine the importance of a web page.
PageRank was developed by Google founders Larry Page and Sergey Brin at Stanford. At the time that Page and Brin met, search engines typically linked to pages that had the highest keyword density, which meant people could game the system by repeating the same phrase over and over to attract higher search page results. PageRank is patented by Stanford.likely Larry Page named it as page rank.