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Now Playing: 06-20-12 Marketplace Tech Report

It's getting harder to be anonymous online. And Facebook's about to make it more difficult, having announced a deal to acquire Face.com, a facial recognition software company, for between $55 million and $60 million. On a site like Facebook, facial recognition could be used to help spot your friends in pictures, which can be fun. But there could also be a more troubling side to it.