The Twitter MoPub iOS SDK, now supported by Twitter as a part of the Fabric developer suite, helps developers integrate advertising solutions into their iOS mobile apps. The SDK can be used to add banners, interstitial, and native ads to an application. The SDK also offers conversion tracking and additional services to aid in embedding mobile advertisements.
Why did Pinterest remove its API documentation earlier this year? Well, apparently there is no rush to release an already developed API to the public yet. In fact, it may not be released for a while as Pinterest wants to avoid re-tweeting the #mistakes Twitter made in its infancy.