....The ones I'm concerned with are $20 or more self votes (because that's roughly the 50k SP 100% vote level), especially in comments...
... If you'd like to see some bad examples of behavior just check out: https://steemit.com/payout_comments
It will show you the highest paid comments...
..These are almost always whales self voting.
My experience.
A friend of mine made an introductory post, and someone who is not even a whale commented on it. He did not upvote my friend's post, but he upvoted his irrelevant comments (two comments) and got $8 without adding a cent to my friend's post.
My conclusion.
People can be greedy! Those that are shouting bad governance will do worse if they are given the mantle of leadership!