If anyone is a Delta Skymiles member go to the following site:
http://69.88.133.30/skymiles101/index.html
Answer the questions and you will win up to 10,000 bonus miles. This is not a Hoax. I saw the offer at flyertalk.com
http://www.flyertalk.com/forum/showthread.php?t=378703&page=1&pp=15
Everyone is trying to access the site at once so it’s dead slow. Hopeless on a dialup. It took 25 minutes for it to come up on my T1.
Good Luck!
Note: You can also register for an account right after you finish the game.