E-coupons are manufacturer coupons that are loaded onto your grocery card before you shop. E-coupons can be the easiest coupons to use as you don't need to clip, organize, file, store, or lug anything to the store, except for your store loyalty card. Everything is stored and tracked by your card and once you register all your grocery cards with the e-coupon websites, you just load the coupons to your card, shop, scan your card, and collect your savings. E-coupons are mostly for brand-name products, but occasionally you'll find one for a store product. Just be sure to have your grocery card with you at all times to use your e-coupons.