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.
Blogdigger
RSS search engine, providing full-text search, as well as metadata search on RSS information. It has link search funtionality, as well as searching by date, topic, title and other fields.