Grocery Aisle Coupon Fairies: Nuisance Or Nice?

Grocery Aisle Coupon Fairies: Nuisance Or Nice?

You reach for an item at your local grocery store, and notice that on the shelf next to it is a coupon thoughtfully left behind by another shopper. But wait, is this a thoughtful way to keep clipped coupons from going to waste? Or just a way for shoppers to feel good about themselves, but create more litter for grocery store employees to clean up?