Originally Posted by Jetlink
American: miles expire 3 years after the date of last activity. I read a magazine article about someone losing 1M miles. They wrote to American in advance asking that their miles not be cancelled. American refused. The passenger played chicken and saw their account drop to zero.
That's the dumbest thing I've ever heard of. Why would anyone play chicken with 1M miles? For that many miles, it'd be worth doing a tiny MR (e.g. LAX-SAN) just to keep the account active!