Disagreement with rewards is the first reason given for flagging a post. There is nothing inherently wrong with that if you legitimately disagree with the rewards for a given post (like a $500 post for a picture of someone's cat for instance). This is not stealing. It is voting on how rewards are distributed. There is a certain amount of steem power/dollars distributed daily. By flagging a post you are saying that you think the reward for that post is too high and that some of that reward should go elsewhere. If you upvote a post you are also taking away someone else's reward. Everybody you didn't upvote would have received an ever so slightly higher reward had you not upvoted. Is this also stealing?

The system can , of course, be abused in either direction.