Since no one else has stepped forward, I've put together a web page to describe Agora to outsiders. It's currently at <http://www.fysh.org/~zefram/tmp/agoranomic.html>. Taral, please put it up on <http://www.agoranomic.org>. Amendments are welcome. Also, as I do only structural markup and not visual design, if someone wants to produce a CSS stylesheet that might be a useful addition.
-zefram