Privacy groups accuse Google, Yahoo and other advertising vendors of creating a “Wild West” atmosphere with few rules for protecting consumer privacy. The complaint centers around the practice of real-time trading and sale of individual Internet users’ profiles. Google says it offers its users choices about what information is used in targeted advertising. The FTC should require that these companies spell out their practice of trading and selling user profiles in their privacy policies, the groups say. But an industry spokesman says consumers already benefit from targeted advertising, which is just a “more efficient” business model.”]