The program is the latest in a spate of partnerships American Express has executed since 2011 leveraging its Card Sync technology—connecting card members with their Foursquare, Facebook, Twitter and Xbox Live accounts.

But those programs have all only delivered deals, not actual goods. “We’ve been doing a lot in the area of social commerce over the past two years,” said Leslie Berland, svp of digital partnerships and development at American Express.

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Other products that will be included in the Twitter sale are: At the time of writing a Twitter search for the Amex Gift Card hashtag brings up plenty of results — underlining the fulsome marketing opportunities for Amex: Amex said the remaining catalog of products available to buy via tweet will go on sale on Wednesday, February 13 at noon, EST.

At that time it will release a full list of product #hashtags, storing them as “favorites” on the @American Express Twitter page so buyers can browse what’s on offer.

The $25 American Express Gift Card can be purchased using a synced American Express Card starting today for only $15 by tweeting #Buy Amex Gift Card25 (quantities limited, offer expires 3/3/13, limit one per Cardmember).

The remaining catalog of products goes on sale Wednesday, February 13 at noon, EST, when the full list of special product #hashtags will be released and highlighted as "favorites" on the @American Express Twitter page.

But Twitter doesn’t usually factor into the conversation.

American Express began to change that last year when it rolled out the ability for card members to connect their accounts and tweet hashtags to receive merchant offers.American Express today announces a new social commerce experience that turns Twitter #hashtags into purchases in a unique and seamless way.American Express Cardmembers who sync their eligible Cards at sync.americanexpress.com/twitter and tweet special #hashtags can buy American Express Gift Cards and products from Amazon, Sony, Urban Zen and Xbox 360.Now, less than two weeks after Facebook and Discover partnered on the offline Facebook Card, American Express is taking Twitter a step further.Starting today American Express card members can link their Twitter accounts with their American Express accounts and tweet specified hashtags to actually buy products on the social network.Cardmembers already synced with Twitter for offers need to add a few more details, including their billing address, for product shipment.