I just signed up, I haven't tried it yet though. I plan on using it at Target today for diapers ($3 cash back on Huggies). I saw it on the Krazy Coupon Lady blog, you can stack coupons at the store, then take a picture of your receipt, upload to snap and you earn cash back on eligible items, when you reach $20 they send you a check. No restrictions on stores, coupons, and works in Canada too!