Will Facebook pages be looked at to see what controversial statements were said, or will the candidates essentially have an understood agreement not to go there, since most everybody would have a few things on Facebook, or a forum like this, that would be embarassing?
They're already checked. I know people that monitor and their Facebook, worried of even the most controversial things appearing. Some of it is wise but a lot of it is definitely paranoia. I guess that's what happens when you have political friends.
I think of it this way - if I'm running for office and Facebook is still around, I'll either a) be off of Facebook because I'll be a few years out of college and don't really feel the need for it anymore or b) simply make my page private before I start rumoring about a run. If making it private is too risky, I'll delete it.
Stuff like this forum can always be taken out of context and I'm sure it would be used (depending on the type of race, it might not get much attention).