I've had plenty of times where a comment I made got downvoted like crazy, but a response I made to a comment asking for clarification got a lot of upvotes. It seems people really like to jump on that downvote button, especially if they see something already getting downvotes (i.e. maybe they don't even read it, they just downvote on reflex).

Votes happen to be really easy to deal with in software, which is probably why they're so commonly used. However, when it comes to people actually casting votes, they behave a lot differently than software creators expect.

So perhaps we should try something else, like maybe sort by "activity" (how many times the comment was replied to) to sort of counteract that reflex-like urge to use it as an agree/disagree button (if you agree or disagree strongly, you're likely to comment).