vbHyperChat

[ThePimp]

ADDITION / REVISION:
Another way to do this might be to have a checkbox in on the NewThread page, that is selectable like the "Yes, post a poll with this thread", but instead have "Yes, post a chat with this thread".

This check box would then call a shoutbox at the top of the New Thread. All "Shouts" in the chat, get stored as normal posts in the database under that thread title, and increases the user's post counts (maybe with the ability to turn it on and off in the admincp).

If anyone thinks they can do this, it would be a great addition to any board, and pick user activity up substantially.

Note: This addition / revision would solve the problem of having to create "Rooms" as the chat would be associated with the thread title.