I feel like shutting up the people who harassed and blackmailed me on social media a few months ago. I think if I were to start doing so though I would be met with quite a bit of objections from people.
If someone said something you didn't like in the comments on a site you owned, and you wanted to erase them, do you feel that you don't have that right. (even if you expressly state that you do reserve such a right when people signed up to your site?)