Sheer speculation, but I suspect some of them grew out of it over time and the communities fell below critical mass, and the conditions for new entrants to repl

Sheer speculation, but I suspect some of them grew out of it over time and the communities fell below critical mass, and the conditions for new entrants to replace them weren't there. It was very much a product of the BBS world, and I have a hard time imagining stuff like this gaining traction now.