Don't our medical records have everything they want to know if you,ve been to the doctor in the last 20yrs? I've worked in the medical profession & don't see HIPPA being nearly as secure as they claim. Ancestry.com has been pushing this as long as I can remember. My siblings all did this so it probably no longer matters that I didn't. I never joined FB, but with my family there, you can find pics of me posted by family & friends & they don't need me to join to track me.
I've been so careful for so long, but family & friends have not. They get us either way!