Learn more at: https://sync.americanexpress.com/twitter Get products, offers and more with your synced American Express Card by Tweeting special #hashtags.
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Thanks for letting me know thenextweb. This is so dangerous!
Today American Express announced that it would sync with Twitter in a deal that would utilize the purchasing power of hashtags. For those AmEx cardmembers that sync up their eligible cards and use special hashtags, they can purchase AmEx gift cards along with products from Amazon, Sony, Urban Zen, and Xbox 360. (via American Express lets cardholders use hashtags to buy things on Twitter - The Next Web)