Google Blogoscoped has posted tipster-supplied screenshots of a prototype of Google's upcoming health-information service. Presumably, these are screens from the demo reportedly being shopped around to health professionals and other advisors. While the amount of data Google Health plans to store is impressive, and potentially helpful, it's terrifying to contemplate the prospect of one company controlling all of your personal data — from communications and business documents to medical records. If we're lucky, Googler Adam Bosworth's make-work project will never get off the ground.

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