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.
Using a Linux L2TP/IPsec VPN server
This document gives you the background and show the steps for implementing an L2TP/IPsec based VPN using Linux, Windows and MacOSX