Sure, but it's not as if the data used to create the targeted ad disappears after the ad is served, or that the data in a single, secure location. It's shared w

Sure, but it's not as if the data used to create the targeted ad disappears after the ad is served, or that the data in a single, secure location. It's shared with 100 other analytics companies and could end up in the hands of your health insurer, or God knows who else.