What annoys me slightly of downvotes on HN is that many users seem to simply downvote comments for the only reason that they don&#x27;t agree with their content (as opposed to judging them off-topic, spam, or poorly thought&#x2F; structured).<p>One possible solution would be to force downvoters to leave a comment explaining the reason of the downvote. The comment could then in turn be up or downvoted, putting the karma of the downvoter at stake.