Health Vault API? Anyone seen this before?

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So, I was browsing the internet today, looking up ideal body weight and found this calculator.
http://www.healthcentral.com/diet-exercise/ideal-body-weight-3146-143.html

Notice the "Copy from HealthVault" button. I clicked it, it asked for my Microsoft password and then auto-filled my info for height and weight.

Anyone else see this kind of integration elsewhere?