It's a pity that when I read your good comments and the one above it, both had been downvoted into the grey. Many newcomers here at HN don't seem to understand that downvoting here is not meant to indicate that one doesn't like an opinion, it's supposed to be for comments that are abusive, obviously trolling, or that contribute nothing.
I propose an improvement to the downvoting API: One can downvote all they want, but each downvote will cost 1 karma/reputation point. That way, people with much good reputation can as needed mark abusive posts. But the newcomers will think more carefully about marking down posts they simply don't agree with since it can plunge them into negative.
