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.
Relativity Tutorial
Tutorial by Ned Wright Ph.D. (UCLA) featuring a step-by-step introduction to special relativity (focusing on spacetime diagrams) and the basic ideas of general relativity.