A visual cue that indicates when a follow-up comment on a post is from the post's author. For example, when someone on Hacker News links to a post by Mark Pilg

A visual cue that indicates when a follow-up comment on a post is from the post's author. For example, when someone on Hacker News links to a post by Mark Pilgrim, I'd like to be able to scan the comments to see if Mark has contributed to the comment thread.