Thank you guys!
I really needed some impetus like this to keep it going.
I wrote the forum myself and am now trying to Ajax it all with Rad Ajax. Maybe it would make a good sample project?
At present I only have the kids from the school I teach at registered and I use it a lot for home learning and lessons (the forums, web pages and ecards are popular) and as the kids are mostly English but live here in Tokyo, they find the forum a release.
The premise for this site is that only schools with their own email domain domain can register, thus offering at least a little security.
.Net and Telerik apart, I have found it all but impossible to get other schools interested in this. My colleagues think I'm crazy unfortunately... Never mind, I will keep going with this as I know that the internet will become a major force in Education in the next 10 years and beyond and that safe interactivity for kids will lead the way.