Maybe. I can't speak for others, but it is all I can do to keep up with emails and PMs. I'd never get anything done if I was doing IM too. It would be like being on the phone all the time.
You know, you can PM a member and set up IM on the side by exchanging AIM IDs or whatever. You could also set up a time to meet in the chat room. That is still there.
Jan