Frequently, I get a strip of coupons or other
promotional items from a little printer at the
checkout of my local grocery.

Coupons emerge as a thank-you for purchasing a
product, or based on some other derived data.

Yesterday, after buying a couple pints of Ben &
Jerrys Ice Cream (my favorite bad-for-me snack
food), I got the following checkout coupons in
sequence:

Save 55c on Two(2) Pints Ben & Jerrys Ice Cream
Free High Cholesterol Survival Guide