American Express cardholders can earn a $25 prepaid AMEX for $15 by syncing Twitter account with card by March 3rd, 2013.
Sync Your Accounts to Receive $25 Gift Card
1. Visit AmericanExpress.com and sync your American Express card with Twitter account.
2. From your Twitter account, tweet #BuyAmexGiftCard25 to add the offer.
Wait until you receive a message: “@ reply” from @amexsync with the confirmation #hashtag,
3. Tweet the #hashtag within 15 minutes of the response from @AmexSync to confirm your purchase.
Your gift card will be shipped with free, two-day shipping once your purchase is confirmed!