PageRank is Google's way of measuring the popularity of pages from the number of links to them. Produces good search results, but is now a major target of spammers, who try to get links onto other pages in order to boost their page rank.
- Referer log spamming : http://www.komar.org/faq/scumbags/referrer-log-spamming/
Chinese firewall designed to reduce it : (OnChina) http://ross.typepad.com/blog/2004/12/politicalrisk.html (OnChina)
See also :