Quick quick update -
Checking over my Google App Engine account, I notice: 'Whoa, somebody has been playing with the very very very very early alpha build of a chat program I not-so-cleverly hid at the bottom of my blog'
So kudos to whoever found that!
And here is a brief rundown of what it is:
Multiuser chat, Unity presentation layer, Google App Engine backend.
Net result: A completely free-to-host chatroom, running on Blogger, Unity files hosted by Google Sites, backend hosted by Google Apps.
Sweetness itself, correct??
Follow this blog if you want to know more!