The only thing that concerns me is the lack of discussion on the extra 5 miles (for a total of 10 miles per dollar):

On January 1, 2008, new rewards guidelines go into effect. Only members who have signed up to receive emails and provided a valid, deliverable email address will be eligible for our top dining rewards levels. To avoid losing benefits and maximize your AAdvantageŽ miles, please familiarize yourself with the new guidelines.

Look for new Membership Level guidelines effective January 1, 2008.

http://aa.rewardsnetwork.com/promo.jsp?id=14600044