Comment by cyrus_

Sure. There is no way to eliminate whacko conspiracy theorists and fringe forums. They existed before social media too. The idea is that interpersonal dynamics can help manage these things: if your uncle Frank posts about chemtrails, then hopefully someone he trusts can point him in a different direction in the comments, and if not, at least the people reading it will see the comments. If Facebook just surfaces this information, you get none of this: click and boom you're in an alternative reality full of lizard people and humans in cosmic battle.