Sometimes I post a "good" answer to a question, but then it turns out I missed something. Someone else comes along and points out my error/omission in a comment, and I change my answer. My answer is now better, freshly active, and I get more upvotes.
However, I kind of feel that I owe that commenter a little bit of the credit (and therefore rep) for having helped support my answer. I can upvote the comment, but there's no rep gain for that.
Is there any way I can give the commenter a portion of the rep I gain from further upvotes to what is now our answer? I don't mind some approved existing solution, or some new totally manual solution, but it seems like it could be automated as well.
A similar question was asked in a comment to an answer here:
and one suggestion (which was not popular) was to find some other questions/answers by the helpful commenter and upvote them. I'm kind of in agreement that each post should gain upvotes of its own accord, and besides, there may not be enough other posts by that user to fully compensate them for their assistance.