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There is no requirement on any Stack Exchange site to explain your downvotes. And there shouldn't be. Should everyone explain why they upvote? If you think someone should be required to comment when downvoting, you should think they need to leave one when upvoting, too. It is precisely the same mechanism - just in the other direction. If someone wishes to ...


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An additional reason to require comments is to be sure the negative points being assigned to the user who posted the question are justified and not arbitrary. Maybe the person leaving the down-vote doesn't understand the question because he or she has very little knowledge of what the question discusses. Or maybe someone is revenge-down-voting a question ...


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That happens to me on occastion — the "oops, I didn't mean to press that" <click>. An undo-comment-vote feature was added to the main Q&A site early last year: Should I be able to cancel my up-vote on a comment? Unfortunately, the code that runs Area 51 was split off the main Stack Exchange code base long before that feature was added. It's ...


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