15刀换AMEX25刀giftcard

https://sync.americanexpress.com/twitter/Index

To take part in this promotion:

Sync your American Express credit card to Twitter （切记。。。先做这一步）
Tweet #BuyAmexGiftCard25 – you will then get a confirmation that your tweet has been received
You will get a confirmation that your tweet has been received (go to your “Connect” tab)
IF you are given a link to update your information, go to that page, enter your information (credit card billing address, expiration date, 4-digit card ID), and click the “I Agree, Submit” button
You will then have to go to the “Me” tab and delete the already tweeted #BuyAmexGiftCard25 tweet (this is only for those that had to give the credit card info)
Re-tweet #BuyAmexGiftCard25 – you should receive a confirmation from Amex (go to the “Connect” tab) (again, only for those that had to give the credit card info)
Go back to Twitter and tweet #ConfirmAmexGiftCard25  - you only have 15 minutes to do this
Verify you get an email confirmation
The gift card will be sent to your billing address on file

LZ已实验成功，PS:AMEX真是财大气粗，25的giftcard都用free 2 day shipping。。。

一张卡可以弄一次，但必须要sync不同的twitter

Thanks. 已成功