The recent implementation of a -5 karma penalty for replying to comments that are at -3 or below has clearly met with some disagreement and controversy. See http://lesswrong.com/r/discussion/lw/eb9/meta_karma_for_last_30_days/7aon . However, at the same time, it seems that Eliezer's observation that trolling and related problems have over time gotten worse here may be correct. It may be that this an inevitable consequence of growth, but it may be that it can be handled or reduced with some solution or set of solutions. I'm starting this discussion thread for people to propose possible solutions. To minimize anchoring bias and related problems, I'm not going to include my ideas in this header but in a comment below. People should think about the problem before reading proposed solutions (again to minimize anchoring issues).
Surely this makes it very tough for a non-trolling user to figure out what was wrong with his post? Few people are going to explain it to him. You need to be familiar with LW jargon before you can expect to write a technical comment and not be downvoted for it, so this would very easily deter a lot of new users. "These guys all downvoted my post and nobody will explain it to me. Jerks. I'll stick to rationalwiki."