Good enough for mobile.
I do say good enough. Like YouTube, we need to be able to set the resolution for low bandwidth users. Also, Im not a large fan of how chat works with the live stream. I would be much happier and I think it would be an ease of accessibility if chat and the stream could be split screen instead of pull down. Otherwise, bandwidth issues and design of the app is really cool.
Gigalisk about
Twitch: Live Game Streaming