Offer valid April 1 - May 31, 2010. This bonus is only applicable for Share Miles, the bonus does not include Buy or Gift Miles transactions. Bonus amounts will be awarded upon completion of the transaction. Only the Dividend Member receiving the shared miles will receive the bonus miles. Only the first 50,000 miles shared will qualify for the double miles bonus (additional shared miles will not be eligible for a bonus). Offer is subject to change. Miles purchased through Buy, Share or Gift Miles do not count towards Dividend Miles Preferred status. Share Miles transactions are non-refundable. All other Dividend Miles Terms and Conditions apply.