> I've learned to not give a rat's ass about downvoters.
Well. I wouldn't care that much too.
BUT HN comment rely on an invisible karma value and if it is below a certain threshold, the accounts "suffers" aka, certain functions have no visible effect. Then suddenly upvoting other comments/stories doesn't do anything (looks fine to you, but doesn't increase the value for everyone but you) and your comments start with an (invisible) negative score, so you will find your comments instantly on the bottom, almost no matter how many upvotes. It's an intransparent system, and it used to be more transparent, when HN was still open source software. Correct me if I am wrong, but that's how I experienced it and put together the puzzle. I certainly would prefer if there would be only upvotes (like Facebook) and no downvotes/flagging - it doesn't work anymore, the community got too big and changed.