As I told two days ago, you can make a lot of money by posting and upvoting your own comments.
But I'm not sure this is the better thing to do, because it feels wrong.
By upvoting my comment I earn 0.02$, so 0.01 SD and 0.01 SP, but it feel wrong because even if I wrote something interesting I can make money out of this..
What do you guys think? Should I upvote my comments? And you what do you do?