I'm old enough to know better and don't care enough to rant.
In my view:
As some of you know, I have moderated and do moderate on other outdoor forums (a couple are not outdoor related...but people are people). I have watched forums and sub-forums come and go over the years for a variety of reasons. Inflated ego's, poor keyboard etiquette, weak or overly aggressive moderation can kill forum interest REAL quick. The other death blow to forum participation that I have observed is
LACK OF MEANINGFUL CONTENT. Just how many times do we have to discuss the use of a baton anyway??? As far as I know, the Search function on the forum is still working! Honestly, my young scouts have had this most basic of the basic skills mastered for years! When the experienced outdoors person gets bored with the extreme rudimentary and incessant redundancy...like we have had here (IMHO), he goes elsewhere where his valuable time can be spent feeding his brain (yes, some folks can make you wonder). Going over the basics here and there for newer members is appropriate and just dandy, but if a forum is going to build muscle, it needs to get off the milk bottle. Growing and active forums (the kind that most people enjoy) just don't happen on their own, experienced and quality people keep the ball rolling.
Like kgd and a few others, I was mildly happy to see a new sub-forum. It is nice not having to sort through 'to be, or not to be, with a baton', or 'big knife versus small knife' threads to find a nugget. No, people don't generally leave forums because they divide into sub-forums. My experience tells me otherwise.