Intelligently replying to trolls provides useful "negative intelligence." If someone has a witty counter-communication to a troll, I'd like to read it, the same way George Carlin slows down for auto wrecks. Of course, I'm kind of a procrastinator.
I know: A popup window could appear that asks [minutes spent replying to this comment] x [hourly rate you charge for work] x.016r = "[$###.##] is the money you lost telling us how to put down a troll. We know faster ways: don't feed them."
Of course, any response to a troll MIGHT mean that a respected member of the community disagrees with the "valueless troll comment" assessment. --A great characteristic to have: one who selflessly provides protection against the LW community becoming an insular backwater of inbred thinking.
Our ideas need cross pollination! After all, "Humans are the sex organs of technology." -Kevin Kelly
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).