Upvoted - this [groggles' comment] hits the nail on the head.
PG, given that you gray-out comments that get torrentially downvoted, perhaps you could bold-face (or render in green?) those comments that get a certain number of upvotes, or perhaps those comments that exceed X% of the aggregate number of upvotes for the thread.
PG, given that you gray-out comments that get torrentially downvoted, perhaps you could bold-face (or render in green?) those comments that get a certain number of upvotes, or perhaps those comments that exceed X% of the aggregate number of upvotes for the thread.