it's from the bitmo gift card app, its like swytch and all the gift card apps.
download the app
http://bitmo.com/download/ click on the menu and add your payment method
click the gift card icon at the top of the screen, select “Shopaholic” gifts, and choose any Amazon gift card valued between $25-100.
Choose your contacts list or send it to yourself by leaving the recipient field blank.
use coupon code amazonhs20 on the last page and it gives you 20% off