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.
people.math.gatech.edu
School of Mathematics at the Georgia Institute of Technology. Page includes author's notes of multivariable calculus, differential equations, and mathematics of biology. various applications and linear algebra (pdf format). Also, has family lineage.