I actually disagree with you on this. Rewards are always paid even in case they are below a value of $0.01. Further I want people to know that I valued their comment, so upvoting their Posts would lead the wrong way.
(Update: Don´t believe it, I ´ve been wrong - see below 😅)
a thank you comment and a mention that you upvoted their post works.
You are mistaken. Comments and posts with $0.01 rewards are not paid. @timcliff has taken out a ticket on the issue.
https://github.com/steemit/condenser/issues/1819
Looks like I´ve really been misinformed so far. Sorry for That!
I have to keep my comment upvotes above 2ct then from now on. Thanks a lot for making it clear to me and making sure my votes reach the reward pots ;)