Recently, Ribbon.io announced in-stream payment option that lets you buy things without clicking away from Twitter.com.<p>How did Ribbon implement this?
This article pretty much explains it.<p><a href="http://techcrunch.com/2013/04/10/well-that-was-fast-twitter-shut-down-ribbons-newly-launched-in-stream-payments-feature-built-using-twitter-card-technology/" rel="nofollow">http://techcrunch.com/2013/04/10/well-that-was-fast-twitter-...</a><p>More specifically, it uses the Twitter "Player" card to load an iFrame with a separately hosted Ribbon checkout page. Example here: <a href="https://www.ribbon.co/086f0a?twitter=true" rel="nofollow">https://www.ribbon.co/086f0a?twitter=true</a>