I like to encourage the readers to comment my articles by granting their comments 1 % upvotes (depending on the STEEM price that's about 0.1 dollar). I would consider it as counterproductive to void these small upvotes.

Instead of that one could limit the number of posts + comments per day and user which are qualified to earn money (that would be an incentive to make 'good' comments instead of many). In my opinion it was a big mistake to increase the number of four fully rewarded posts per day and user to 'unlimited'.