There has been a lot of commenting lately and comment quality has been all over the place. To reward comments that deserve to be read, we've rolled out comment sorting.
It's right next to the comment count. See it? Hover over it.
We defaulted the comment sorting to "Best", so comments with the greatest number of points will bubble to the top. That upvote link below comments is a lot more useful now. You should use it on the good stuff.