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.allisons.org
Includes an introduction to Prolog, unification, the back-tracking search process, the source code of a Prolog interpreter, example Prolog programs, the logic of Sir Bedevere (Monty Python), and a Java applet that runs Prolog.