Anyone who uses Google wallet needs to read this.

Google has just announced that its Google Wallet API system will no longer work with digital purchases. Merchants using Google Wallet have until March 2, 2015 to get their systems in order as the API will then be terminated. 

In computer programming, an application programming interface (API) is a set of routines, protocols, and tools for building software applications.

Don’t worry: Google Wallet is here to stay. You can still make in-store purchases, and you can use your Wallet credentials to buy apps, content and goods from Google Play as well as make in-app purchases in Android apps. But the third-party payment processing feature that allows online merchants to let you buy their wares with your Google Wallet will disappear on March 2.

Credit goes to: https://gigaom.com/2014/11/13/google-wallet-is-closing-shop-on-digital-goods/

And: http://www.androidauthority.com/google-wallet-api-digital-products-567180/

Which payment service do you prefer for purchasing stuff online?