Participants in Delta's SkyMiles or American Airlines' AAdvantage frequent flyer programs, or anyone who would like a chance to win a million frequent flyer miles, should head over to the App Store now.
Both airlines are providing contest incentives to get people to use their apps. American, for example, is holding the "Mobile Million" contest. Just download and install their app by October 15th, play a few games of sudoku (among other things, th
