<p>A few months ago, I posted <a href="https://stats.meta.stackexchange.com/questions/2473/why-is-a-comment-that-maligns-my-field-not-inappropriate-for-cv?noredirect=1#comment6835_2473">this question</a> on the CV meta asking about why a flag for deletion that I added to a comment was declined.  This question generated what I think was some very interesting discussion.  In particular, @NickCox made an interesting point that there is no way to downvote a comment as a way of saying "this comment is inappropriate and/or does not add to the discussion", in contrast to how questions and answers are handled in the StackExchange model.</p>

<p>I'm actually somewhat surprised that comments are handled so different than questions and answers.  I personally would appreciate a way to indicate that I think a comment does not add to the discussion without outright flagging the comment for deletion and/or responding to the comment (responding to some comments can sometimes take a thread off-track, so in some cases I would prefer to have a downvote feature rather than posting a new comment).</p>

<p>So, my question is, is there any reason why downvoting is not enabled on comments, and if there isn't, could downvoting on comments be implemented on CV and other StackExchange sites? </p>
