Red Cross donation for Midwest relief earns up to 500 miles

I donated $100 this morning, sent the email receipt to Aadvantage, and this afternoon the 500 miles are in my Aadvantage account,

"More than half of the U.S. has been affected by damaging weather. Make a donation to the American Red Cross and receive American Airlines AAdvantage® miles.
As Red Cross recovery operations continue in tornado-devastated neighborhoods throughout the Southern United States, hundreds of workers are also helping people in Tennessee, Arkansas, Louisiana and Mississippi along the swollen Mississippi River.
From North Dakota to the East Coast and all throughout the South, the Red Cross has launched 23 separate relief operations in 18 states since March 31. Wildfires in Texas, flooding along swollen rivers and the destruction from several tornadoes have led to the deployment of more than 6,200 Red Cross workers from all 50 states and territories to help those in need.
Make a Donation to the American Red Cross and Earn AAdvantage® Bonus Miles

If you would like to join us in supporting the disaster victims by making a cash donation, American will reward your generosity with an AAdvantage bonus mile offer. Through June 30, 2011, AAdvantage members can earn a one-time award of 250 bonus miles for a minimum $50 donation, or 500 bonus miles for a donation of $100 or more to the American Red Cross."