It depends on the forum.
I belong to the Findadeath forum, and because it's got so many categories, NOT JUST deaths, which includes a lot of current events, and separate forums for personal stuff and celebrity gossip/ commentary, it's been very busy since it started in 2007. Start a topic there and within a couple of minutes there are a dozen views; wait five more, and there's already several replies.
On the other hand, I also belong to the Richard Bey forum, and even though it covers current events all the time, and Richard Bey is even kind enough to post (and socialize with some of the long-time members), one notices that only a half-dozen or so regulars post constantly. Yet a couple of years ago, the posts were fast and furious, and posted by more members, as they are on Findadeath now.
This being a forum with a singular focus, *I've* probably said as much as I ever will about DS proper, plus there were the couple of years prior on alt.tv.dark_shadows (when I used to post every 2 minutes, it seems.) Perhaps other posters feel the same? I don't know.
It appears that something has to happen in the DS universe to jump-start the activity again, whether it's stories about the latest DS fest, or a station willing to rerun either or both the old & 1991 DS (which brings in some new viewers who then look for more information) or talk of a new series like in 2004, or something definite about the Depp movie version.