Ye' old general discussion board. Basically, for everything that isn't covered elsewhere. Come here to shoot the breeze, shoot your mouth off, or whatever suits your fancy. This forum is not for asking programming related questions.
I gave up waiting for it to log me on, but I can imagine how cool it will be I'll try it again during the week when everyone else is working and I'm errr... procrastinating.
I'm pretty sure it's only supposed to provide the classic ubuntu interface in a web browser. I think the Firefox implementation was just an added extra; I don't think it's trying to be a web OS (like eyeOS).