I am currently developing a Free Software comment system (AGPL) in PHP. I'd love to have some help if anyone is willing or interested. It doesn't currently have replies, which is a feature I'd love to have working. And I am concerned about my methods, particularly because it relies on writing the comments to .txt files, which requires a directory be readable, writable, and executable by everyone.
You can view my comment system here: http://www.tildehash.com/comments.html
And the source code here: http://www.tildehash.com/comments.php?source
(I posted this on another PHP forum, but they don't like projects... they deleted my post