Thanks JudyJFLA, another good idea!

FWIW: I just checked out the best mileage deal on that AA page, which was for 10 miles per dollar donated to the National Foundation for Cancer Research. The organization's website looked impressive, but I then looked them up on the Charity Navigator website and they only get a 1 star rating (out of 4): http://www.charitynavigator.org/inde...ary&orgid=4179