that'd be like a shoutbox but ill think about it
Actually it's not really, at least not the way I have implemented it. I have a box at the top of my biggest board where announcements are posted. Announcements can be permanent or time-sensitive... meaning they stay up for 7 days and then are dropped. Its all in how you use it, I guess. I can't see where it would be like a shoutbox at all.
(Can't stand the things (shoutboxes) myself...)