Does this forum actually have any forum specific rules? I mean most forums have some kind of rules about things like topics/advertising/personal attacks/images/double posting/thread necromancy/spam etc. Or is this community so small that we are just lucky to attract any posters at all.
It used to be a big community, but something happened to the old forum and everything was lost. Now we are currently stuck with this forum that has almost no features commonly found (PMs, post notifications, etc etc). I suspect if those features ever get added again, you'll see a lot of people start posting again.
As for rules ... I'm not even sure there are mods right now, or if the forum software in its current state even supports moderation. The forum owner has been working on spam control, and I'm pretty sure advertising other forums is a no-no, but people were doing it because this forum was just about dead.
Seems like some more people came back, but for it to really take off again, there needs to be mods, and other standard forum features. Who knows on the ETA for that. Could be next year at this point.