In a similar vein, this is the main reason I refuse to accept "coupons" or vouchers from Pharmaceutical reps. I do accept samples. As soon as the patient uses one, their names and addresses are accessible to big Pharma and direct-to-patient advertising and mailings can be sent. It is the same reason I never use my real name or address when I apply for a "discount card" at the local groceries. No one has a right to know how many boxes of Captain Crunch I buy a week.
Leslie