(For the benefit of other readers: these people are talking about invisible spam comments in this thread, which are hidden unless you are an HN user and have opted-in to seeing moderated content on HN).
Spoiler, most dead comments are usually just flame bait and utter drivel. HN does groupthink down vote opinions that are different from what's generally accepted here, but for a comment to be actually dead, it's almost always just complete trash.
