According to MediaPost, the new search algorithm over at Google has caused Mahalo and Yahoo’s Associated Content to lose rank, while eHow by Demand Media is unaffected. Obviously Yahoo’s properties don’t use AdSense. Mahalo has some AdSense. But eHow and the other Demand Media sites make a significant contribution to the coffers of AdSense. I suspect that the new algorithm has been tweaked so Demand Media sites are unaffected, Mahalo is collateral damage, and Yahoo loses out.
Google always maintains that their algorithms have no bias, and that will likely always be true. However I suggest that almost certainly the tweaks made to the algorithm will be tested against revenue, and the latest iteration will be one that on the surface shows a dismissal of content farms, while they keep their biggest content farmers on board.
There is an opening for a more-fussy search engine.