If you are someone shopped on amazon.com, owned an android device, and have updated the Amazon app from the Google Play store in the past few weeks or months, then chances are you got an email from Amazon, saying that you have received a $10 of Amazon app credit:
As a customer who has recently updated the Amazon app from Google Play, you have earned a $10 credit valid towards apps, games and in-app items. The latest version of the Amazon app for Android now allows you to use a single app to discover and shop for hundreds of millions of physical and digital items. We have added the promotional credit to your account and we will automatically apply the balance of your credit to any purchase of apps, games and in-app items that you make before November 2, 2014 at 11:59 PM PDT. To begin shopping from your Android device click here.