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Search Engine Wars: The Next Frontier

Search engines may soon use personal information to return better search results. Google's plan to offer an e-mail service that delivers ads based on e-mail keywords has privacy watchdogs nervous. NPR's Rick Karr reports.

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Rick Karr contributes reports on the arts to NPR News. He is a correspondent for the weekly PBS public affairs show Bill Moyers Journal and teaches radio journalism at Columbia University.