shopping.yahoo.com/ Save Big on iTunes Gift Card at Yahoo Shopping. Shop Now and Save!
How I did it: cos like most people I have an itunes account, I couldn't work out how to pay with a gift card. Go to the store menu, then view my account, you have to enter your password, then click view account again; edit payment information; click on gift cards and certificates, then click on redeem, you have to enter your password again, then click redeem. The amount you have to spend shows up in a box at the top of the screen and updates every time you buy something. It's cool.