Amount of karma is not a measure of interestingness of the contribution, it's used mainly as an 'agree' button.
2. People get more karma for posting minor corrections than for posting substantive comments. That's arguably unfair, and again it has a possible follow-on pathology: making nitpicking more popular and carefully thought-out insightful comments less popular.
"quotes" - Linus Torvalds
quotes - Linus Torvalds