
American Express and Twitter struck a deal yesterday to allow consumers to buy select products without leaving the Twitter stream. But Chirpify has been doing that for a year.

American Express and Twitter struck a deal yesterday to allow consumers to buy select products without leaving the Twitter stream. But Chirpify has been doing that for a year.
We're kicking off our upcoming Social Media Marketing Boot Camp with a special keynote presentation by Ella Chick (left), the digital producer at Anderson Cooper 360°. She'll discuss how the network uses social media for breaking news and leverages social media to draw attention to organizations and causes. Learn more about our program and register here. 
Sci-Fi author William Gibson once said that while Facebook is like the mall, Twitter is like the street. If that’s the case, an in-stream payment service called Chirpify is setting up a virtual hot dog stand on Twitter as we speak. Make that a moving library. Today, Wired contributing editor David Wolman is conducting a 4-day “experiment in barrier smashing” to see if his new book, The End Of Money, can sell on Twitter.