Earlier quoted context omitted.
Ehhh I think HN already directs too much of the discourse. I understand the intent of minimum karma downvoting, for example, but I think that encourages elitism, because if you have to be validated with 500 karma before you can downvote, then the implication is that you're in a class of people that's better than others and you don't feel you have to explain yourself. EDIT: like how this comment is being silently down…
Downvoting of this comment only makes sense to me if someone disagrees with you. And on that note, is that what downvoting on HN is for? Other link aggregators typically say downvoting isn't for disagreements; that's what commenting is for.
But then there are people who silently disagree via downvote. To that I ask what the purpose must be. "I think you're wrong" - How? Why? Is it my tone? Lack of evidence? To me, downvoting without explaining is just a smug way to feel less insecure about one's own opinions without having to stand up for anything.