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.
www.mysqlconf.com
Lessons Learned in Building a Highly Scalable MySQL Database: MySQL Conference & Expo 2008 - Co-presented by MySQL & O'Reilly Conferences, April 14 - 17, 2008, Santa Clara, CA