Boost Mobile is doing a great job of providing a range of enticing rewards to its customers, combining loyalty and participatory marketing. If you're all about the music, they'll provide downloads and concerts. If you'd like to do some community service with fellow Boost subscribers you can EARN a concert ticket. This program is extremely well-thought-out.
Link: Boost Mobile Sets Loyalty Program to Music. 2007-May-2, by Betsy Spethmann
The LA “payoff concert” was part of Boost’s 2-year-old RockCorps volunteerism program that gives members a concert ticket for every four hours of community service that they perform. Boost recruits volunteers for local non-profit groups. This year, the program is running in Los Angeles, Atlanta and New York, with plans to add 10 more cities.