I would argue that if there is a way to get a comment on the board at all, those who want to continue arguing will post those comments.
Also, if you can edit your comments, you're opening the door for twisted threads where replies are in one block per person with "@person timestamp," although that's easily fixed by only allowing editing for a short while.
Also, if you can edit your comments, you're opening the door for twisted threads where replies are in one block per person with "@person timestamp," although that's easily fixed by only allowing editing for a short while.