IMO: Shoutboxes takes away from people actually reading and replying to the actual forum. People will simply come to the forum to just 'chat in the box' with whoever they see online at the same time. This is how a shoutbox can kill a forum ;-)I personally avoid shoutbox forums, just because I already know what the outcome will be by adding one. I can see adding one for like, a live blog, or even a live stream. If anything, I'd use the shoutbox for special events like what I mentioned, or even something else.