But how to use this service? I will tell you in brief.
First of all, you should syn your twitter account with Amex card information by visiting sync.americanexpress.com. Click on 'Sign in With Twitter' and your card details. If you want to remove your information, you can later UN-sync your Card with Twitter.
Here the main downside is the 'Deals' you get. You have to choose your deal by visiting AmericanExpress - favorites. If you liked the offer simply tweet using #hashtag of respective offer and wait 15 Minutes to get reply from American Express. You get offer only after you get a reply to the tweet.
That's it, if all goes right your product will be delivered to your billing address.
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