ATTENTION MARKETERS - THEY'RE ONTO US.
"Here's a clever strategy for grocery-store coupons from The Simple Dollar: sit on your coupons for a month, then spend them. Coupons are often the leading edge of product promotion, which features progressively deeper savings. By waiting a month, you can apply your coupons to an already discounted price."
Clever grocery-store coupon strategy - Boing Boing
