Save money by syncing your Amex card to Twitter

American Express started a neat and new way to save money by using Twitter. If you have an Amex card, you can sync your Twitter account to your Amex account. Then if you tweet a hashtag (ex: #AmexBestBuy) for a special offer from that business, you can get that discount put back onto your Amex account given that you actually go and make that purchase.

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