Not exactly what you're looking for, but Active.com offers some sort of AA flight discounts to its "Active Advantage" members. I looked into it about two years ago but I was never able to find anyone who could lay out unambiguous, concise terms and conditions of the flight discounts.

Active Advantage also comes with so-called rental car and hotel discounts which I was able to confirm are absolutely worthless. But...the AA discount is potentially worth something.