Aside from the actual content, I'm intrigued how working on this sort of content can pay. The author claims to have spent three months (not necessarily full-time, I assume) reading everything O'Reilly has personally written in public and this gigantic article must have taken a good week or two to write and edit alone. That's several thousand dollars of effort there and I can't imagine it ever getting paid back by this article, no matter how good it is (or not).