Anonymous sites like Blind and 4chan (and other semi-anonymous sites like Twitter and its clones) seem to have the same problem but in reverse, where everything is overloaded with negativity and creates that strong signal, even if it's unwarranted. There is a reason conspiracy theories, misinformation, racism, and other cynical rhetoric tend to spread so well on those sites. I think Twitter and Blind have improved their moderation recently... but 4chan seems to always be the same cesspool.