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!