I like that suggestion even more than mine. Could be a link beside the timestamp, like "4 hours ago (edited)" and clicking the edited stamp would give you a hi

I like that suggestion even more than mine. Could be a link beside the timestamp, like "4 hours ago (edited)" and clicking the edited stamp would give you a history. I edit my comments all the time and wouldn't want to lose the ability to improve my wording or fix typos or whatever, but I don't see any harm in that transparency. The ability to completely delete a comment (along with any history) should probably be preserved though.