As various services like Facebook deal with competitors by packing more functionality into their apps, those apps are increasingly experiencing usability issues. In the old days of the API economy, outside developers could leverage a service's APIs to build something better. But those days are gone.
All Twitter APIs will soon use HTTP error code 400 for calls beyond your rate limit. One of Twitter's most popular services, the Search API, currently uses error code 503. You'll want to update any of your applications that use Twitter search so that they're looking for the right code.
Autodesk announced several updates to the Forge platform including the release of three new APIs; Data Management API, Model Derivative API, and 3D Print API. The company also announced that 3D Robotics (3DR), MakeTime and Seebo are the initial investees of the Autodesk Forge Fund.