I'm okay calling it either "moderation" or "private censorship." I prefer a world where businesses are explicit about who they are. "Welcome to Acme. If you support poisoning animals, this is the wrong place for you. Go to poisoninganimals.com where you're welcome, instead." I can tell you, if I ran a website and someone plastered a bunch of comments promoting pedophilia, I wouldn't want to be associated with that. Maybe it results in fewer sign-ups, but just hosting content like that is making a statement. Users pick up on it, and you wind up, not being a democratic website for everybody, but being a website slanted towards creeps.