It works great! My members just had a virtual (text based) shoutbox ping pong game after one of them suggested that the sound was similar to a ping pong ball.
I have the shoutbox embedded in an iframe (wrapper module) of the site which links to the shoutbox in a module position attached to a different "empty" template (apart from the shoutbox module). That way I can also have a link that opens up the shoutbox in a popup window and have them both open at once if I want to. It doesn't seem to slow down anything.