Dropbox, the online file storage application, has launched a new API that allows developers to use JSON, OAuth and OpenID to offload their user’s storage needs to Dropbox. In a way, the Dropbox API works similar to Amazon S3. This application will remove the need to store a local file on your mobile device--which is a limitation on the iPad/iPhone. Instead, the document can be saved to the cloud and accessed from your main computer as needed.