I wonder about all the plant-specific forums... I grow lots of different plants and am not wedded to any one type; hence I don't watch any specific plant forum. I therefore rarely participate in those forums unless I happen to catch something of interest in the 'recent thread' list, or start one myself to get an answer to a question. In some ways, I think separating out all these separate plant types is a disservice to the general membership, who may benefit from learning about (for example) what type of soil morning glories like or dislike. I have also felt (in some cases) like a bit of an interloper if/when I do jump in as most of the plant-specific forums tend to evolve into rather tightly knit circles. It seems to me that initiating a thread for a specific plant and perhaps specific issue in a more general forum would get more activity: e.g., Morning Glories-Soil Requirements in the All Things Plants or Perennials forum. Just my random thoughts. (And not picking on the morning glory people, I've thought this about all the plant specific forums.)
And kudos to RickM for responding to the interest with a new badge - the more the merrier in my mind.