In the submitted article from February 2009, Paul Graham wrote, "Probably the most important thing I've learned about dilution is that it's measured more in behavior than users. It's bad behavior you want to keep out more than bad people. User behavior turns out to be surprisingly malleable. If people are expected to behave well, they tend to; and vice versa. "Though of course forbidding bad behavior does tend to kee…
Perhaps subjectively this change did improve the comment quality a bit, I still see plenty of ongoing examples of the problem though. What I'd like to see is the actual removal of karma (at least comment karma) from the user profiles as well. I see no good reason to incentivize intelligent thoughtful conversation, no one actually does it for karma. I do realize there is a bit of a feedback system in place (upvotes te…
Likewise, upvotes indicate that I have captured a portion of my audience's attention. Often this is because of some minor insight or extension of the conversation, though certainly on occasion I have been rewarded for snark.
In general, gamification is a viable system for influencing user behavior, and if only submissions were rewarded with karma, a great deal of undesirable behavior would be encouraged. The current system helps new HN'ers learn the ropes.