GameFly's Weekend PC gaming sale has a hidden coupon code
This weekend GameFly has a PC download sale on select Call of Duty titles. Not only are they 50% Off but you can also use coupon code "GFDMAR20" for an extra 20% savings. Example savings: Call of Duty: Modern Warfare 3 is only $23.99 (list $60) and Call of Duty: Black Ops is only $15.99 (list $40).
Sale ends March 11th at 11:59 PM Pacific.