Yes, this forum is important.

[JCD]

In a previous mafia game, the mafia had a forum just like this (I know, I was on the mafia team myself that time) and we won rather well. It's all down to communication. Communicating via PM is just too awkward to be doing every night. By using this forum, we can effectively co-ordinate our actions, discuss strategies and whatnot. It is important that all of us use this. One weak link in our chain and we're screwed.