What percentage of current posters do you estimate are FAI philanthopists/activists?
Can you give a couple specific examples of what distinguishes them from casual users? (donates to SI? works in a relevant field? volunteers for SI? etc)
Now that I think about that, neither poll asked takers how much they had donated for existential risk mitigation. (In case you're wondering, the answer in my case would be “zero”.)
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).