Spirit Airlines Rewards Mall

Spirit Airlines, the U.S. based discount carrier, has announced they will begin offering a rewards mall offering a plethora of consumer products. The mall will work similar to other airline malls, in which Free Spirit members may earn miles or points for purchases. The mall is expected to launch sometime this spring, so Spirit Airlines passengers keep a look out. I found the mall for my frequent flyer program to have some great offers. I shop at Banana Republic a lot, which is a member store. Why not go ahead and log in through the airline website and get extra miles for purchases I would make anyway?