Ask HN: Review My App (Simple Group Chat)

Hi. If it's not too much trouble, I'd like some feedback on a super simple AJAX chat app that I coded up in my spare time. It's called Yakeze.

I'm aware of the excellent Mibbit, but I was shooting for something even more simple. I also have what I think is a unique feature that puts people into the same room based on the HTTP referrer. That is, if you follow this link, you'll all end up in the same chatroom:

http://www.yakeze.com/chat/

Here are some other useful "tricks": http://www.yakeze.com/help/

Like I said, it's very simple by design, but please be honest with any criticism or ideas you may have. And feel free to use it too!

Thanks!

P.S. If anyone is interested, the back-end is powered by Google App Engine (Python).