Google announces privacy changes across products; users can’t opt out

After March 1, a user who has recently watched YouTube videos of the Washington Wizards might suddenly see basketball ticket ads appear in his or her Gmail accounts.

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http://www.washingtonpost.com/business/technology/google-tracks-consumers-across-products-users-cant-opt-out/2012/01/24/gIQArgJHOQ_story.html?wpisrc=al_comboNE_b