Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
The Web Credibility Project - Stanford University
Part of the Stanford Persuasive Technology Lab, their goal is to understand what leads people to believe what they find on the Web. With information, papers, and related links.