Here is the fine print on this deal:
Limit 1 voucher per person; limited quantity available.
Enter your BuyWithMe voucher number at Fandango checkout to receive your tickets.
Valid for 2 tickets with a value of up to $13 each; all Fandango fees are included in the price of your voucher.
If two tickets exceed $26 prior to entering your promo code (for IMAX and 3D), you will be responsible for paying the difference in price.
Cannot be combined with any other offers or promotions.
Voucher not valid until day after purchase.
Promotional value expires 09/22/2011.