According the the UKGuardian, 54 thousand cases of revenge porn/extortion were removed in one month.
a discussion of how they monitor censor stuff there.
The real problem is riducule/harassment.
My sister in law won't go there after her daughter and the daughter's high school skating teem was harassed. And Ruby gets teased all the time for being a Christian.
Some teenagers are on it all the time, and they are vulnerable to bullies.
and there is no way to stop that.
Teenagers are sensitive to these things, and it may be one of the reasons that teenaged suicide is up.
and yes I use facebbook to check on my relatives, but I only check it once or twice a day.
In contrast, the kids are on their cellphones texting to various sites all the time...