Wow - I just came across "My Little Forum" and I'm totally impressed! I just downloaded the source and can't wait to dig into it.
In a nutshell, its a super simple forum system. It is quite different than a lot of other forums I've seen lately, including PhunkyBB, and I believe its more of a "2ch" style forum, like Kareha and Shiichan.
As I recently stated, I'm planning to add openid to phunkybb ASAP, and I really need to add anonymous posting as well.
UPDATE - I'm reviewing the code and noticed a few things: