Real Chat/Instant Messaging Integration?

[Winning]

Are there any useful addons out there that allow instant messaging to be integrated into a forum?  The dedicated "chat room" concept seems like something out of the 90's, which is why I think no one ever uses it, at least not on any IP forum I've ever been on.  Even an active chat widget on the side of the forum using the existing chat feature might see some use.  I searched the marketplace but did not see anything.

Seems like it would be THE killer forum application, I am really surprised IP or vBulletin don't already have it.

Thanks