http://milesmomma.com/dining-bonuses/
Has a link to registering for this bonus for AAdvantage's idine. I'm not eligible, it said. YMMV, perhaps worth a try.
Shows also links for Delta and HHonors registraton.
From the T&C:
*This bonus offer is by invitation only for select existing (your program here) members. To qualify, you must be a member of the (your program here) program and register for the One Bite at a Time Bonus through the links on this page by December 31, 2012, and remain opted in to receive emails from the (your program here) program with a valid, deliverable email address. You must continue to satisfy Online and/or VIP Member level criteria to earn this bonus.