I introduced quite a few people too, most of them online "junkies". The concept is very interesting and they're all hooked, initially. And it's all fun and games until they get flagged by asshole or they stumble upon some drama filled post - and you simply can't avoid those. The feeling they get after a while is that it's all "an insider game", and there is simply too much aggression in the tone and in the majority of actions to stick around. The aggression became so pervasive that even if you choose carefully your circle of friends, you can't avoid it anymore.

Seems to me that those who are still sticking around either have a thick skin or they just want to milk the system and run away once it dries up.