Child Internet Security

Can any one recommend a good child internet security program?

Ideally of the free variety...

 

http://www1.k9webprotection.com/

Bluecoat are one of the biggest and best content filtering companies out there at the moment.

 

You can also change the image settings on Google to filter pictures.

 

Windows Live Family Safety is good. And free!

Can set up filtering of websites based on categories (toddler, preteen etc.) or restrict individual sites. Also tracks all activity and can restrict software usage also:

http://explore.live.com/windows-live-essentials-other-programs?T1=t3

 

Cheers for the replies folks.
I will look into those options.