Mastercard recently announced the Mastercard Innovation Engine. The engine acts as a marketplace for next generation digital customer experiences. The marketplace allows Mastercard and collaborators to offer API access to customer-focused digital experiences through plug and play solutions.
Twitter has a popular iPhone app, but now some of its functionality is also built into Apple's latest mobile operating system, iOS 5. Tweeting a photo from the default camera app is now a tap away, as is tweeting a link from Mobile Safari. Tweeting is also built into the SDK, making it available via other applications without needing separate Twitter authentication.