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.
LDC - Linguistic Data Consortium
The Linguistic Data Consortium (LDC) creates, collects and distributes speech and text databases, annotated corpora, treebanks, lexicons and other linguistic resources for research, education and development.