The secrets revealed in brutal_honesty draw me in. Some are truly mundane, others are simply confessions of some sort of racism or other type of intolerance. Then there are the really honest and seriously private posts, which are rare. It isn't an open community. You have to sign your life away to join, and promise forever not to reveal what you've read there. I am not revealing anything specific here, of course.
What gets interesting is that everyone responds. There are frequently responses heading toward double digits, and not all are mean, of course. One poster confessed that being a part of the community has made him or her meaner in real life, which made me think and laugh. Perhaps that's the real attraction. It makes me laugh.