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.thelongtail.com
The hits at the top of the charts lose sales, but the niche artists further down the popularity curve actually benefit from file-trading, according to a Harvard paper on the economics of filesharing. [The Long Tail]