My experience with forums is not vast, but indicates that most people read far more than they post in any of them. And then, there are many who "sign up," look around a bit, then never visit again. I think the moderators go through and prune the crop from time to time, so the actual number of forum members is fluid.
What we'd like to see, of course, is for more and more of those forum members to become full FSW members, and that's not always the case. I'd like to actually SEE the numbers, but respect Boston's reasons for not sharing them. The next "Jam" will be most interesting!
So, in the meantime, let's all do our best to welcome new folks and encourage them to post.
MamaLiberty