it would be nice if HN had a random "explain your vote" mode where voters had to choose from, eg., agree, helpful, insightful, etc. vs. disagree, unhelpful, provocative
I will admit that I've made trolling comments from time to time which get well-deserved vote-downs, but there are certainly times where I would like to know what the point of disagreement is because if I'm missing a point of view from which I could learn I would like to know!