Check your Amazon.CA account by logging in and seeing if there are any banners on the screen for this offer--there are once again offering some customers a $10 promo credit on your account if you purchase a $50 or more gift card. It can be an e-gift card (no physical card--the activation code for it is emailed to the recipient) or a physical card. It can be to yourself. The purchase must be made by May 31. The promo certificate will take a day or two to show up in your account.
Here's the details: