just this month we hit a point, at which we were confident enough to release this and now we're even more confident, so we put it on HackerNews.
If you care about our techstack: the backend is built using rails, em-websocket and postgres, while the Frontend relies on angular with some Backbone leftovers. Messaging is done via vanilla websockets and protobuf.
Every kind of feedback is welcome, however harsh. Thanks!
https://plus.google.com/+SolonRocksYourParty
And now I have one!