The problem I have with IRC is that there is no decent search/logging option (and please don't mention bots). And I hate having to nag everybody with a question that was asked a few days ago or answering a question that was already asked unless there is some new twist.

How about setting up a 37sigs campfile account? The only problem is that I'm not sure that we'll fit in there (the premium account only supports 60 users simultaneously chatting)