A group of Googlers, including ubiquitous trend-upsetter SVP Marissa Mayer, did their song and dance for the press at a "factory tour" on the Google campus in Mountain View today. The big news? The official launch of Google Health, which offers features like a doctor finder and the ability to upload and track your medical records. Already, the privacy concerns are mounting.

While promising to protect the data of individuals, the company did say it will deliver reports on data in the aggregate — a prospect an epidemiologist might relish. According to the terms of the privacy policy, there's nothing to stop the company from divulging your medical history to authorities in the case of, say, a National Security Letter or any old subpoena from the courts. Not to mention employers snooping on you while you browse Google Health at work.