Comment Curation? I have never thought of that. I read a lot of comments myself and drop a few whenever possible. To me, the comment section is what add flesh to the post and make it better as it is the sum of other people's opinion on the subject.
When I had some sp delegation, I usually go through the comment section of some post I enjoy and give a few cents to comments that I like for visibility. Now that my sp is low, my upvote cannot push this comments far for visibility but I'll still try to reward at least three thoughtful comments as it relate to the post. So @kevinwong, let's see what we will have out of this.