I just registered for the promo and got the page below:
You’ve successfully registered to earn double Medallion® Qualification Miles (MQMs)—plus generous mileage bonuses—for round-trip Delta flights out of Pittsburgh through December 31, 2010:
Earn 5,000 bonus miles plus double MQMs when you fly to Delta hub cities—Atlanta, Cincinnati, Detroit, Memphis, Minneapolis, New York/JFK and Salt Lake City
Earn 10,000 bonus miles
plus double MQMs for flights to all other cities in the U.S., Canada, Mexico and the Caribbean—over 350 to choose from
Earn 25,000 bonus miles
plus double MQMs for international travel in Economy Class to over 70 countries
Earn 50,000 bonus miles
plus double MQMs for international travel in BusinessElite®
Folks, I think the
RACE IS ON!!!!!! 
What do you think?