It sounds like he's saying that depending on the Referer header for a loaded comments section, HN may or may not generate upvote buttons that are duds. Looks l

It sounds like he's saying that depending on the Referer header for a loaded comments section, HN may or may not generate upvote buttons that are duds. Looks like there's an auth parameter in the upvote GET request, so sounds entirely plausible.