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).
Problem:
Huge comment threads on certain articles consume a lot of energy of users, writing page long comments and counter comments on more and more tangential issues. Clearly we'd be better off if smaller debates produced spin off threads of their own either in the open thread or on discussion level articles.
Idea:
Introduce a -2 karma penalty for posting in the comment section of an article with more than 1000 comments. A warning as currently implemented on the -5 karma penalty should be used.
Data please: how many articles with >1000 comments are there, and what are some recent examples?
I'll also note that I just paid 5 karma to make this reply. Yet your comment was downvoted presumably because people disagreed with your suggestion, not because they thought you were trolling. The new feature of discouraging discussion on downvoted comments is counterproductive.