Solving the HN comment problem.
i.imgur.com
i.imgur.com
The problem with downvotes is that they do not give meaningful feedback or encourage positive contributions. They are not even especially effective at discouraging negativity. When not lost in a sea of upvotes, downvotes only encourage defensiveness and complaining.
Flags should be visible by the commenter only, and the issue of whether to kill comments or penalize karma doesn't have to be decided immediately.
I only see flags being useful for admins to help keep spammers out and to ban truly offending users.
At the moment you can downvote but (enough) people don't. If we gain flags, why will people who don't downvote use them?