It seems like the terms and conditions language last year was more ambiguous:
"Earn 5% CashBack Bonus for online purchases from 10/1/13 (or the date on which you signed up, whichever is later) through 12/31/13, subject to a cap of $1500 in purchases. Offer does not apply to government products or services, education providers, utilities, or travel. Amounts that are not charged to your card during your online purchase will not qualify. These purchases must be made by 12/31/13. Purchases made using Near Field Communication (NFC), virtual wallets, or similar technology may not be eligible. If a purchase is coded for a category other than listed above, it will not qualify. Rewards are added to your CashBack Bonus account within 2 billing periods. See CashBack Bonus Program Terms and Conditions for further detail." Guess it is worth the gamble, although there are a number of gift cards I'd like to liquidate.