There is definitely some level of manipulation in the market and even if it's not blatant manipulation, with the majority of the daily volume being driven by computers, it's hardly a normal market. (20smoney.com)
Any site that uses a phrase too often as Anchor Text, will not rank well for that phrase because Google sees it as blatant manipulation. (apricotlaw.com)
THIS blatant manipulation of data should be what makes them angry. (skepticalob.com)