European Commission to assess filters
The Safer Internet Programme has initiated a study aiming at an independent assessment of the filtering software and services.
http://www.saferinternet.org/ww/en/pub/insafe/news/articles/0206/ec.htm

Do Web filters protect your child?
Millions of parents around the country rely on Web filtering software to shield their children from the nasty side of the Internet–porn, predators and other unseemly phenomena.
http://news.com.com/2100-1032_3-6030200.html
http://news.zdnet.com/2100-9595_22-6030200.html