Last week Facebook rolled out several platform updates pertaining to Authentication, Social Plugins and the Graph API. Several key features were added to the platform; introduction of a new access token API endpoint, the launch of the Shared Activity Plugin and real-time update settings were added to the App Dashboard.
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.