Thought i may as well get this one documented… Mr doob made the original harmony which got ripped off by heaps of people making iPhone apps etc out of the exact idea, herein one of the problems with open source (view source?) javascript.
http://mrdoob.com/projects/multiuserpad
and for you dev’s out there, some words about it’s creation: http://mrdoob.com/blog/post/701