You can market worldwide so why limit yourself. Even Amazon commissions are not paid to visitors outside your country unless you are registered with Amazon in the buyers country. Cell phone traffic is humongous worldwide, the U.S being only a small part of it. So we have to change our hat from U.S. Marketer to Worldwide Marketer. Sales worldwide are much larger than the U.S. Some products sell better in one country than another. Customers want good products and good service and the ability to receive their products timely and they want to be able to pay easily.

If you use PPC, you can spotlight single countries. Let your affiliate manager guide you.

There are over 3,041 Million mobile phone users in the the top ten countries of the world. There are 1,115 Internet users. CIA

2012 Retail sales U.S. $33.8 billion

2913 Retail sales Worldwide $1.25 trillion

Shoppers want:

good products
easy delivery
easy returns
easy payment

John