Courtesy of Mrs MJonTravel, and possibly (probably since she received a mailer) targeted, so your mileage may vary.  Sign up for The Rapid Rewards Report and The Rapid Rewards E-mail Update at southwest.com/rremail by 5/31/10, remain subscribed for 3 months, and earn 2 Rapid Rewards credits.  No promises, but worth a shot if you aren’t receiving these emails already.