Ben Wofford dives into the underworld of airline-rewards-hackers:
Schlappig, 25, is one of the biggest stars among an elite group of obsessive flyers whose mission is to outwit the airlines. They're self-styled competitors with a singular objective: fly for free, as much as they can, without getting caught. In the past 20 years, the Internet has drawn together this strange band of savants with an odd mix of skills: the digital talent of a code writer, a lawyer's love affair with fine print, and a passion for airline bureaucracy. It's a whirring hive mind of IT whizzes, stats majors, aviation nerds and everyone else you knew who skipped the prom.