Once you have 4000 redeemable Xper points (check the Xper tab of your profile), click Redeem Points and let us know what country you live in and that you'd like an Amazon giftcard. We'll then email you the giftcard code (to the email attached to your G@G account). You have one year to add it to your Amazon account before it expires. Once in your Amazon account, there is no expiration.
you message them and they send you an email with the code on it. then you go on amazon and put in the code. you get the balance immediately. im on my 3rd one. YAYYY. i bought random stuff out of boredom :(