You need a tiny bit more colour on the homepage to me. It's an off-white-pink on my screen (looking at it on a mac in chrome). Or maybe some kind better shading. That's just my one gripe.
Otherwise pretty easy to set up and get started. Do you need other people to sign up too in order to use it, or can they use the site as a guest?
Don't have an issue with the angry birds avatar, actually makes me want to change it, and is probably in keeping with the whole thing being more lively than dreary old "work".
Good luck with it.