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.
x-symbol.sourceforge.net
Overview of a package providing some semi-WYSIWYG in LaTeX or HTML source. Beyond that there are a description of the details, a manual and links to the project pages on sourceforge.