It puzzles me too, everyone I've met IRL who owns a Printrbot gushes about it like it's their genius baby, it seems to be the one printer that I've not heard any complaints about... But its fans seems to have very little online presence.

I did a quick Google search and found http://www.printrbottalk.com if that helps. It seems to have recent activity. Perhaps tell some of them about this forum and that they're welcomed to come here if they'd like.