Many forums I've been to have succeeded in such a thing. However, most of the members were adults. Most of the children were left out of the meeting, including myself. Most parents are not trusting of the internet, especially the ones who refuse to use it for social purposes. The news flashes reports on missing children everyday that are usually linked to child obductions. Henceforth, a forum like this that consists mostly of children would be most impossible to create a "convention" or "meeting."
It is difficult for children to understand things such as this because they're apart of this generation, the computer/internet generation. Especially since they are not yet parents.