Earlier quoted context omitted.
Hmm. HN likes substantive articles and dislikes sketchy tactics. Those two almost never conflict. When they do, though, we tend to favor the substantive article, which this one clearly is. It's an elementary tutorial, yes, but an unusually well-crafted one, and had it appeared on the author's website ( http://apfelmus.nfshost.com/blog.html ), there'd be no question. Perhaps the positive reinforcement of seeing what a…
I am curious to know why this post was taken down. It was certainly a useful post that organically bubbled to the top as quality content. Can someone please provide feedback.
By the way, one of several tactics that you shouldn't use on Hacker News is astroturfing. That (along with vote-rigging) are likely to alienate users and get your accounts, and your site, penalized.