I am so glad I managed to get my upvote value over $0,02 so that I can even upvote comments :D Always so glad to interact with people by responding as well as 'rewarding' them with a (little) upvote! :D
You can upvote comments even if the value of your upvote is less than $0.02. Anyone can upvote comments. With some teamwork, it is easy to push the pending payout of a comment above $0.02. And there are dedicated projects for that too. For example @dustbunny and @dustsweeper.