Hm, maybe I chose the wrong word. I meant that since comments are a discrete piece of information, I think they should have unique URLs, not just anchor tags or, worse, nothing.

I really like how this site enables linking directly to an individual comment - I've used that functionality many times to point friends at one I've found particularly insightful.

And who knows, maybe having their direct linkability emphasised in this way will act to increase the quality.