American Airlines recently established an AAdvantage Facebook page, which currently is handing out airline miles in exchange for Facebook “likes.”
After clicking on the like button, as 214,691 people had done as of this writing, you can embark on the Mystery Miles Journey.
Enter your AAdvantage number — or importantly, enroll in the loyalty program if you are not already a member — and the airline will deposit 100 to 100,000 miles in your account as part of the promotion, which runs through the end of March.
Read the full story at: http://www.tnooz.com/2011/02/25/news/american-airlines-exchanges-facebook-likes-for-miles/