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.
linchpin
A linchpin or lynchpin is a metal part use in mechanical engineering to prevent a wheel or other rotating part from sliding off the axle it is riding on.
Trivia about linchpin
A central cohesive element, or something inserted to keep a wheel from slipping off