I was going to try it, but, honest feedback, the fact that I have to login before even giving it a go is a real no-go. Why don't you let me try before signing in?
Fair point and something we considered - we wanted to always have a valid account when drawing so that users could be identified when collaborating together, and with only 48 hours to get everything working the quickest way was to slap on Twitter/Facebook authentication.
Knocked up in 48 hours with Django, WebSockets and Redis
All open source: https://github.com/stephenmcd/drawnby
Released django-socketio a week later born out of that project: https://github.com/stephenmcd/django-socketio