Looking for a specific shoutbox

[mfractal]

Hi all, i am looking for a very simple shoutbox for my forum at forum.techinferno.com
as you can see vBShout Lite is currently installed, and it's pretty good but not what i am after.
I am looking for a super simple shoutbox ,kind of a twitter style like where everybody can just write.
No personal messages, nothing. Just a public shotbox i can put in the forum's sidebar.

Kind of like http://teiserron.gr/index.php?action=forum (notice the shoutbox on the left).
Any recommendations will be greatly appreciated!