The new design also indicates that the app market will allow customers to earn virtual currency by completing an offer wall.

Our customers can earn miles four ways - when they buy, sell, finance or refinance their homes.

It also enables customers to earn miles up front - 1,000 miles minimum for each $10,000 of the loan.

After 1000 points, customers earn a $25 Amazon.com gift card.

Generally, customers earn a point for every dollar spent.

Shell says its customers have earned $40 million in gasoline rebates since November.

A few customers, they said, have been earning free flights without paying interest charges on First Chicago credit cards linked to the program.

The company's typical customer, he said, is 28 years old, earns $30,000 or less a year, and does not have a checking account.

Then, with each subsequent return, the customer earns more downloadable data, eventually getting an entire movie or game.

Shopkick receives a fee for each kick a customer earns.