Hi guys - Jamie here, one of the cofounders of Livecoding.tv. If anyone has any questions about the site feel free to ask me and I will do my best to answer!
It was difficult to figure out how to set an avatar at first, I had to go under my stream page and edit there, rather than in the settings. Maybe I'm confused between the distinction between a user and a stream?
Also a suggestion: timestamps would be pretty useful in chat.
Edit: Oh, there already is a request for that.