...leading to the question of whether more such small Wikis should be created for certain verticals.
The first time I heard a sales guy use the term "verticals," I stopped him because I had no idea what that meant. He said that verticals are markets - health care, construction, etc. I said, "so a vertical is an industry?" Yep, he said.
I still hear the term a lot and think it's useless. To me, "vertical" implies a chain of processes leading towards a finished product. For example, the old railroad tycoons would get vertical monopolies by buying up the mines, the steel forges, the rail car manufacturers, etc, so that no competitor could threaten (or access) their supply of railroad ties and trains.
Competing businesses in the same field are not in the same "vertical" in that sense. It's easier for me to visualize them side by side.
But the main thing is, we already have a perfectly good word for this: "industry," or in certain contexts, "market." I'm preaching to the wrong crowd, I know, but please, let's avoid useless business jargon.