Ask HN: Review my chatroom web app

I'm look for feedback on my enhanced chatroom web app. http://www.rapportapp.com u = hacker p = news Or create an account: http://www.rapportapp.com/code/hackernews Has anyone seen Durarara? Well, I'm trying to start a group using this web app I made. The idea is that it's private and invitation-only. I'm looking for tips on design, interface, functionality, and how/where to find more people to join. Thanks in advance!