aristotle - 3:09 pm on Nov 24, 2009 (gmt 0)

Occasionally someone will specualate about the possibility of search engines using visitor behavior as a ranking factor. For example, browsers can collect information about how many visitors bookmark a page and then return to it later.

P.S. By visitor behavior I DO NOT specifically mean 'Bounce rate". Instead, I'm talking about behaviors like bookmarking and return visits.