Look at it this way, it's cutting out the middleman. Facebook, MySpace, and Youtube all allow comments. Ron Paul has Official Pages on each. People leave comments. Not all comments reflect positively on the campaign. But does that mean Ron Paul should cancel all those pages? No. If someone says something, and it doesn't removed fast enough, it just has to be disclaimed. Furthermore, a terms of service for a forum like this means that if you violate a term, you could be banned. So if someone DID do something wrong, having them Banned, would be a good thing, and to show that the campaign has everything under control.
I'm pressing the issue as much as I am because I believe that having an online forum is the great equalizer for shy people and others in a general sense, especially newcomers. Not everyone is extroverted enough to feel adequately comfortable holding a sign out in public. Some people become terrified at the very notion. But that does not diminish their eagerness to be supportive.
First coming upon Ron Paul, or any other candidate, if I was curious, it would actually help out to know that even though multiple forums existed, one was mentioned by the campaign. It would point the way. The other forums could continue with self-destructive guerilla tactics.