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.
mathcast.sourceforge.net
A open source equation editor, with a graphical interface, equation list management, and MathML 2.0 support. Includes feature list, examples, developer information, and downloads.