Hmm, I never thought about leaving a comment as a proof of curation, but it makes sense. Sometimes a post comes across my feed, which I read and upvote, intending to return to reread and comment. If a day or two has passed before I return it seems as though the moment has passed and my thoughts aren't as relevant anymore lol
I know a lot of the votes I get are from auto-voting and trails, which is gratifying in vote count and payout, but doesn't tell me my ideas had any impact on a real human being. Comments relevant to the post help.
Yep, the human aspect of a comment is more encouraging than the payout...unless you are only in it for the payout lol