I'm sure there are psychology and sociology doctors, professors, and students who join to garner information. Probably, there are law enforcement who join for the same reason, but for a different purpose. I've seen parents join whose children have ctb just to learn more about depression and the like. Hell, there might even be some politicians who join in order to learn more, so they can craft more effective bills whether to stop the sale of something, or maybe even enhance mental health care. Don't forget about the Recovery section, too. And then you just have the "curious" who stop by to see what the site is all about.