I have no idea if it works or not, or what the statistics are. I know that I feel better and seem to make progress when I follow what it says.
I also know if I was on a BB claiming to help me stop smoking and everyone on there was a smoker, and then I stopped smoking, I probably wouldn't stay on the BB talking to a bunch of smokers, I would be out enjoying being a non-smoker.
The same applies here. If I'm miserable in my M, and then somehow it turns around and I'm happy again, I'm less likely to stay on here for an extended period of time with people who are having M problems. It's just human nature I think.
