You know for years and years I have been playing around with this script. Modifying it and changing the functionality, layout etc. I just figured wth why not get peoples opinions. Let me know what you think http://chatfixxx.com
All I see is a blank page with a box asking for my name and email, and that is what others will see as well. Is that the first impression you want to leave with visitors ? If so they will just back out of the page and never return. As suspect as people are now of phishing schemes, you should try to look a little more like a real site. If you want to entice them to stay and try your service, how about some graphics, an explanation of what the site is, and how to use it...other than that, only you and your friends will know that it exists.
I wouldn't use black letters on dark blue background. It is a good ideas if you add also some smilies. There is no sign out button. Redesign the entry page in order to have more visitors.