Now we know that spam and abuse make any large Internet forum suck. Your choice: moderation or cesspool.
Also, getting rid of the really extreme filth on the Internet is no fun and people generally have to be paid to do it, which is one of the things that keeps larger social networks in business.
http://www.theverge.com/2016/4/13/11387934/internet-moderato...
In an October 2014 Wired story, Adrian Chen documented the work of front line moderators operating in modern-day sweatshops. In Manila, Chen witnessed a secret "army of workers employed to soak up the worst of humanity in order to protect the rest of us." Media coverage and researchers have compared their work to garbage collection, but the work they perform is critical to preserving any sense of decency and safety online, and literally saves lives — often those of children. For front-line moderators, these jobs can be crippling. Beth Medina, who runs a program called SHIFT (Supporting Heroes in Mental Health Foundational Training), which has provided resilience training to Internet Crimes Against Children teams since 2009, details the severe health costs of sustained exposure to toxic images: isolation, relational difficulties, burnout, depression, substance abuse, and anxiety. "There are inherent difficulties doing this kind of work," Chen said, "because the material is so traumatic."
The whole thing is worth a read, in a couple of sessions if necessary.