Shopping for miles

Spirit Airlines has added the Free Spirit Mall to its loyalty program.

The shopping site is accessible through the Spirit homepage and features products from over 450 merchants, including Apple, Barnes & Noble and Lands' End. Members earn discounts and mileage rewards by shopping at the mall.

To promote the mall's opening, Spirit is holding a "Quarter-Million Mile Giveaway," giving shoppers 100 bonus miles with their first $100 purchase.

Without a big ad budget, the airline's marketing strategy will rely heavily on direct mail and loyalty programs.

Previously, Spirit's 1.6 million loyalty members could only earn miles with a Free Spirit MasterCard or by purchasing tickets and goods directly from the airline.

The Free Spirit Mall is powered by loyalty shopping company Mall Networks.