Great service... Although I'm not sure that enabling guest chatting on the home page is a great idea, professionally speaking, for the following reason, which appeared 5 seconds after I loaded the page:

# Guest126627853584 05:59 PM • cock

edit: also, in Firefox 3.5.8 Mac, the tab title seems to flicker every time the client polls the server. Not sure if this is a fixable bug or just an artifact of all those HTTP requests.