Amex launches pay-by-tweet service on Twitter

American Express has launched the first ‘pay-by-tweet’ service on Twitter, allowing its cardholders to purchase products by simply sending a tweet. The service works by allowing Twitter users to respond to offers shared by merchants

Link de la noticia: 
http://www.mandmglobal.com/news/12-02-13/amex-launches-pay-by-tweet-service-on-t...