Not only has Google ranked the site highly, it seems to be the financier too. It looks to me that this was done just for the Adsense income. Why this was done

Not only has Google ranked the site highly, it seems to be the financier too. It looks to me that this was done just for the Adsense income. Why this was done? Here were my first few thoughts: 1. Display ad revenue. - Maybe initially, there is Adsense markup but the ads aren't showing for me so perhaps Google has disabled them. 2. Affiliate income from the links to jQuery books - I can't see an affiliate code in the links so probably not. 3. Hijacking the Donate button - No. This leads to a blank page with just a Time to Generate snippet.