I think there is enough of google's Hypocrisy, i haven't ever listen of Goolge been penalized for it did doesn't matter its goolge own fault, Goolge stiil playing with its results in order to generate more revenue compromising its reults' relevancy
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How google profits from irrelevance:
http://www.organicspam.com/how_google_profits_from_irrelevance.asp