Other than the very few at the top of the trending list, the amount added on to each post will be insignificant. Less than $0.50 for many, and less than $0.10 for most. This is not worth mentioning, but the $20 you stole from this author is worth mentioning, because you can actually do something $20. You can't do shit with $0.10.

Edit, it's really more than 20 you stole from them, because you impacted the following upvotes as well as reduced its visibility.