Several of you have expressed interest in the source code for the message board I've been tinkering with, called Prattle.
I finally got around to making a tarball. Also, since my ISP has been having some reliability problems, I moved the test system to a different url. Here it is:
http://stonemountain.yi.org/
This is a room-based message-board system supporting linear discussion in rooms that are in a tree. It's quite different from a threaded discussion system like Phorum, where the messages themselves are arranged in little trees. The approach I'm using is more similar to that of Well Engaged, Web Crossing, Citadel, et cetera.
Feel free to download the source code, play with it, give feedback.
I've also registered Prattle as a project at sourceforge.net and will get a regular sourceforge page put together as soon as their server stops acting like it has a case of the slow electrons.