I just came back from shoppers on 8th st in Saskatoon, the young boy cashier refused my 2 printed coupon, one is 0.5 off on 2L milk from save.ca , another one is pampers 1 off from P&G website, he explained they don't accept home print coupon. I realized there are more and more big company started using smartsource to print their coupon, but shoppers don't accept them, why they even exist?