They do indeed have a huge stamp in the market and best of all, the solution is yours. Its not an out of the box ready to go "you will have this and make it work for you". Its totally customizable and if you come up with a good idea frog will make it work for you, like the white list that we wanted.
Lesson plans can still be in the same format as you do them now so there is no stress for the teachers all they are doing is showing them in a different manner. We have had frog now for 2 1/2 years. We are quite a long way down the line and are involving community now also. This doesn't mean we don't still have a lot to do. Please feel free to browse our website, which is all hosted on frog, its http://www.springhillhigh.net
Our staff fell in love with this for the room control feature alone. And, if used properly, you actually don't have to ban a child, as I do not in AD because this does affect the way they work. The white list control makes it possible for the child to still work correctly on the internet whilst not being allowed to abuse it. I also put out a list of kids that are not to be allowed "free time" onto the teachers desktop. This means that they are not allowed in ICT clubs at lunchtime without having internet removed. Works a treat