There was ”Hello to Hacker News” from one of the moderators, to which someone replied ”Hello from Hacker News”. No that much of a spam IMO. And it was from one person, not much all of ”guys” in HN
Never link to issues on bug tracker. This always, without fail, happens. It makes more work for people who are already stressed about trying to solve a problem.
Nah, if it's a historically or culturally significant issue, I'm definitely linking to it so people can read about it. Just add a warning not to post meaningless garbage in the ticket's thread, if you're that concerned about it.