The site is nothing but a doorway page (according to Google's own terms) serving nothing else than the purpose to get clicks on AdSense. There is no content aside from one article - the rest is AdSense.
(If you wonder how he got that amazing Google position with such a crappy site: He uses semi-bluefart/bluefart techniques because i analyzed the links and found some more than odd things, to say it mildly...).
But here is the question:
How comes that Google cans affiliates from Adwords left and right because "they dont like Affiliates" (Clickbank et al.) - but at the same time allows a crap site gain an incredible Google position where its obvious the site is only made for AdSense clicks?
Could it be that Google is ok with it because every click is revenue FOR THEM, for such a keyword. While if someone promotes products as an affiliate for a clickbank vendor Google has no benefit, of course..