On Reddit, you can optionally delete posts and it replaces the content with [deleted] or something.

Would be cool if I could pay like $35 to have my old posts "deleted" (I'd just say replace the content with something that obviously signifies it was removed, including posts that quoted the content), as I started playing this game when I was something like ten years old, and was immaturely toxic. I'm sure a good handful and a half of people could probably relate to that same issue.