Earn 2.5x Delta Airlines SkyMiles

(update: promotion appears to be withdrawn, but valid for those who successfully registered while it was still active)

(expires December 31)

Delta is having a rare promotion that gives you up to a 150% bonus on points/miles earned or transferred from programs such as the Starwood Starpoint program and the American Express SkyMiles Credit Card.  Registration for the SkyMiles Mileage Threshold Promotion is required.

The key earning power is with Starwood.  If you transfer 20,000 Starpoints, Starwood will pad the transfer with 5,000 extra Starpoints, giving you 25,000 Starpoints that will transfer 1:1 into Delta SkyMiles.  Then add Delta's 150% bonus (equal to 37,500 Skymiles) and you get 62,500 Skymiles for 20,000 Starpoints.  Great deal!