I like it. I'm a big fan of simplicity over features. I had a similar weekend project that I threw together last year to make myself familiar with App Engine.

I like it. I'm a big fan of simplicity over features. I had a similar weekend project that I threw together last year to make myself familiar with App Engine. It was similar to yours in that it was unauthenticated AJAX chat, but it relied on obscure URLs instead of grouping by IP address. For instance, to make a spontaneous chat session with Hacker News junkies you'd make up something like: http://www.yakeze.com/chat/HackerNews20101011/ http://www.yakeze.com/chat/HackerNews20101011/