I say no to the idea of letting guests post, since I agree with the fact that too many "trolls" have posted too much crap on the forums (not just here, mind you, in ALL forums I've been in). While the idea of having a guest area on the forum MIGHT be a good idea (like any good idea), it CAN be abused/misused by people who have too much time on their hands and want nothing more than to cause trouble for those who genuinely need help. I've read numerous posts by people who supposedly wanted help, but instead got what they claimed was no help at all. I say those folks shouldn't even bother posting in a forum if they're not going to be the least bit nice about it.