Oke so my 1st thought: Would to have the shoutbox as a premium feature on this website since anybody can join up with an account and some people may just for example create a fake account to spam the chat with their site or other stuff.
Also since the number of community members will grow in time also more people will use the chat so it would get verry busy and messages will go fast so u can barely read them, also for support related and i dont think the chat is for support but people might start asking those questions instead of making a thread wich can become verry anoying
2nd: i think when u have a shoutbox there is a good opertunity for an other open job like ex: a "shoutbox moderator" that keeps the chat desent at all times (when online might even be 2 people?)
3rd: It would be nice too if we would see in the shoutbox where & when a new thread was posted on the site.