That's an interesting idea, but I don't think that's always the case. Sure, I recognize names like tptacek on occasion, but I frequently read (and upvote) a goo

That's an interesting idea, but I don't think that's always the case. Sure, I recognize names like tptacek on occasion, but I frequently read (and upvote) a good comment, and only later realize who wrote it. I've even up-voted several interesting things in the same thread because they present information well, with connections or information that I might not have drawn, and then realized they were all by the same person. I suspect the styling on the site, which presents non-comment bits in a lighter grey color, helps to de-emphasize the authors' identities in favor of the comments themselves.