Ok, I'll grant you that it's not strictly in the guidelines of the site here, but... I found it funny. Hackers are people too, and not everything needs to read like a textbook. We should certainly discourage these sorts of posts, but I think that it's not a real crisis if this sort of article gets through every now and then. There is a reason that HN has voting, and it's this exactly. The people found it interesting, and they voted it up. Oh well. To be honest, posts like this seem like more of a distraction to me. Do we really need meta-reminders of the site rules?