Don't know what the weird emphasis periods are about, but arguably, this isn't SEO but just good content markting, as the post is going viral on HN and the like. Search engines are just one aspect of having a successful site, and if you focus too much on search engines your site ends up being ass.
But seriously, who's going to make a link to a site like that unless it has interesting articles like that.
The #1 bad idea people have is that they're going to rank #1 for a big keyword like "buy WOW gold" -- what you can do it publish 100s or 1000s of articles which will make you rank #1 for 100s or 1000s of minor keywords.
To make it clear this is praise for that site, not an insult.