Great topic! I just wanted to take a minute and point out that it is best to avoid generic top level comments. Someone might mistake you for a bot!
Add something relevant to the post. For this one you could add something like "I didn't know I could earn more with comments." It also shows you read the article and didn't just upvote it, I appreciate knowing someone took the time to read what I wrote and not blindly upvote it.
Sometimes a simple insightful comment can start a discussion that will gain you even more.
Yes, agree 100%. Saying something like "Nice post" over and over might get you flagged as a bot. Great comment, thank you!