Microsoft proposes a tiered approach to protecting the privacy of people targeted by online advertising. Microsoft: Advertisers should get permission before using sensitive, personally identifiable information to deliver ads. Google, American Advertising Federation and Consumer Federation of America have filed comments on FTC’s proposed rules. Google suggests that the agency narrow its definition of behavioral advertising and distinguish between personally identifying information and information that’s not personally identifying. Consumer group calls for stronger rules than the set of self-regulatory principles proposed by the FTC.”]