OK, I like the concept. Could use a bit more style, but that is secondary to function of course. I really like the MyPAN concept, and your point in the FAQ about joining a list just to ask a question and then unsubscribing later is oh-so-true! I just had to do that a few weeks ago on a problem.
Here's three quick comments, one important (well, to me ;), two suggestions. If I were to take a stab at helping address these, where would I find the code (I'm assuming you have more recent in-progress versions than are on CPAN)? How hard is it to set up for testing, or do you have a public test version somewhere already?
1) I searched for one of my projects, but got "No hits". This project does exist and is listed (DBA::Backup). This did not alarm me at first as I figured I might need to initiate the module in some way. But (I had already registered) I saw no way to do that. However, when I searched on the top level namespace, DBA, I got a hit. ... Hmm, perhaps because they are marked as developer releases?
2) Did you roll your own forum code from scratch? Most of the forums I've used don't display all the threads at the top level, just the forum names and maybe the most current thread and/or post information. I think that is a much more useful and friendly interface. It would keep the top page from being cluttered by posts mainly to a single currently active module.
** And, in bringing this from an email to the forum, I now note that the listing inside a forum is not even by thread, but by post. I find this much less apealing. Not only does it make it harder to follow a thread (IMHO), but makes it harder for me to scan for interesting topics - I'm much less likely to bother trying. As you mention in your FAQ, part of the motivation for CPAN::Forum is to provide a format that is familiar to people who use discussion forums elsewhere, and this layout definitely is not like any I've used before.
3) Similar to 2, when I visit a page for a module with no posts, I was a bit put off (confused) by the lack of formatting, which is unusual to me. Perhaps instead of dropping the table if there are no posts, continue to include it, even if it's just the headers. The visual continuity with other forums is less distracting (IMHO) and keeps the page laid out as I'm expecting (and should be getting used to).
Thanks & HTH!--
Sean Quinlan <sean@quinlan.org>