Thanks Bill, Brad. I will look into these you mention. I don't let them use the web a lot, but there are times when were in the room together when they don't like watching what mum and dad are watching and they play games on the Disney, Nogin, Nickolodeon web sites. I don't mind this at all...some of them are very educational. And my son loves the Discovery site. But we all know how easy it is to stumble on to something we were not looking for.
