I'm not super worried about voting per se. If I get downvoted to death and my account banned, I'll have my discussions elsewhere than HN, and I have plenty of venues to have intellectual debate of higher quality than being downvoted and gagged every time I speak an unpopular opinion. I'm still probably far from that based on my current karma, but I've seen a noticable change in the quality of the community in the past year or so.
It's just that I think it could be a great platform for controversial intellectual discussions, but the algorithm is designed to promote conformity rather than raising unpopular but well-backed opinions. For example, I've gotten my speech muffled by the algorithm every time I speak out against specific Apple practices, or against the current version of capitalism (not even capitalism as a general idea, which I agree with, just not the current implementation). Somehow saying something against Apple or contemporary American capitalism on HN is just like saying something against the leader in authoritarian regimes; you'll be flagged, beaten (downwvoted), muted, and banned by the community.
I definitely like the drop-down idea. "I disagree" would not be one of the options for downvote. Some of the valid options I can think of are:
- Irrelevant to post
- Irrelevant to parent comment
- Offensive or violent language
- Personal attack
- Scientifically inaccurate
- Too terse / needs elaboration