Not a huge Delta flier myself, but I just came across this in my inbox. An extra 2,000 bonus miles (on top of the usual 10,000) if you apply for the SkyMiles Gold card:

At Delta, we understand how important earning miles is to our SkyMiles(r) members. Because you've asked to receive partner offers by
e-mail, we're offering you an incredible way to earn miles faster and easier than ever.
__________________________________________________ _

APPLY AND EARN 12,000 BONUS MILES

This month, you'll get an EXTRA 2,000 MILES on top of the 10,000 BONUS MILES you usually receive when you make your first purchase with the Gold Delta SkyMiles Credit Card from American Express. With an extra
2,000 miles, now is a great time to get the Card. You must apply through
this link by September 30, 2003, to qualify for the additional 2,000 miles.

To apply online now, click below:
http://e.delta.com/AC/Clickthru?q=f7...baruba6dXMe5oe

Along with this special offer, we make it easy to rack up even more
miles in almost no time.

> Earn two miles for every eligible dollar spent on Delta purchases.
> You'll always earn Double Miles on every eligible dollar spent at
gas stations, drugstores, and more--even on your wireless phone
bill.
> Earn one mile for every eligible dollar spent on all other
purchases.

So, why not take advantage of this offer today? Apply through this link
for your Gold Delta SkyMiles Credit Card from American Express and get
12,000 bonus miles.