Hi there,<p>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.<p>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.<p>Every kind of feedback is welcome, however harsh. Thanks!