I don't like the suggestion of an off-topic forum.
I think it would get extremely cluttered very very fast, and be way too hard to moderate and control, then things would get out of hand and it would have mod's working round the clock running ragged because someone has the F word copied to his clipboard and spamming away.
It would have to be closely moderated, because a lot of people would abuse the forum, and not see it as how you think they would.
So, no, I don't think we should, I think we should have something similar, but very organized, or it'll come crashing down.
~Beans