Amazon recently started offering Microsoft Windows Gift Cards, and it now appears you can use it to purchase Windows Store Apps on Windows 8.1. Until now there hasn't been a coherent way to gift someone apps, and Microsoft is changing that.
To use the Gift Card in the Windows Store, simply enter the code in your account information. Once it is in your account information, it will show up as a payment option when you purchase an app.
For those of you who do not get how big this is, talk to anyone with kids and Windows devices. We’ve been clamoring to have a coherent way of giving our kids entry into the Store for Windows and WindowsPhone Apps without the kids bankrupting us. It is either you let your kids buy their $1.99 apps with your Microsoft Account or you attach your Credit-Card info to their MS account. A prospect that is not healthy in both cases. You might as well give them access to your bank account.
To use the Gift Card in the Windows Store, simply enter the code in your account information. Once it is in your account information, it will show up as a payment option when you purchase an app.