Checkmypagerank.com provides free tool to check Google Pagerank, we also detect Fake Pagerank, Traffic Rank and BackLinks.

PageRank is one of the methods Google uses to determine a page's relevance or importance. Pagerank fraud is becoming a serious problem. It is achieved when offending webistes use a 301 or 302 redirects that point their sites to sites with a high Pagerank.
 

What is Fake PR - Faking Pagerank

Many webmasters buy PR for their site. They find a site that has a PR of 8 for example and buy a link to their site. After a while, your site ends up with a high(er) PR and you in turn can sell PR or the site in whole; provided the site you are buying from does not have Fake PR.