we use lightspeed here. it does more than web filtering though. i work for a school district. let me know if you want any more info.

In a move akin to forming a neighborhood watch, some filter vendors now allow users to add Web addresses and file download rules to their organizations’ threat databases, said Shawn McCarthy, program ...

The developer of proxy software designed to defeat Web filters is offering Internet users $10 to install and run his application, as a way to raise its profile. Independent developer Bennett Haselton, ...