The 50,000 point signup bonus for the Southwest Rapid Rewards Plus Card is unfortunately flying away just as fast as it flew in last month. I doubt the promotion is getting the axe due to lack of popularity. In fact, my guess is this card offer has been extremely popular among the millions of consumers searching for ways to bring down the cost of their holiday travel this year. It's difficult to turn down over $800 in free money for travel, even if there is a $69 annual fee attached to the card!