Shoppers is tripling coupons starting today and ending on the 28th! Be sure to check out your stores weekly circular here to be sure that they are participating. For this promotion, their ad states:
Unlimited Triple Manufacturer's Coupons up to $.99
On any single item, please limit yourself to four manufacturer's coupons. If the value of the triple coupon exceeds the retail price of the item, you will receive the item free.
I'm kind of disappointed that they aren't doing the double/triple promotion this time, but with all those $1/x coupons out there, this will probably make for an easier trip, inshaAllah (God willing).
You can find discussion of this deal here on Hot Coupon World.