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).
The proposals I have (not all of which are mutually exclusive) are :
Make comments within highly downvoted subthreads not appear on recent comments. Since the main problem with trolling is drowning out of recent comments, this will solve many of the issues. Moreover, it will discourage continued replies.
Have a separate section of the website where threads can be moved to or have a link to continue to. This section would have its own recent changes section. Moderators could move threads there or make it so that replies went to that section, and would be used for subthreads that are fairly downvoted. This has the advantage of quarantining the worst threads. This is a variation of an old system used at The Panda's Thumb which works well for that website.
Use the -5 penalty system but adjust either the trigger level or the penalty size. It isn't obvious that -3 and -5 are the best values for such a system if it is a good idea. The fact is that -3 isn't that negative as comment scores go, so something like -3 can be obtained without saying that much about a comment's quality. -5 and -5 or or -5 and -1 may be better values. The second would offer softer discouragement for more severe comments.
Use the penalty system but have karma penalties be restored if the comment it replies to is subsequently voted up more. This may be slightly more technically advanced, but this will help encourage people to speak out when they think a comment is unfairly downvoted.
Downvoted for putting more than one suggestion in a single comment.
Punish me for this anti-social act if you must, but as one of the dudes who tries to act after reading these suggestions (and tries hard to discount his own opinion and be guided by the community) this practice makes it much harder for me to judge community support for ideas. Does your comment having a score of 10 suggest 2.5 points per suggestion? ~10 points per suggestion? 15 points each for 3 of your suggestions and --35 for one of them (and which one is the -35?)?
Can we please adopt a community norm of atomicity in suggestions?