When working with a CMS, you might decide to store some files in Dropbox rather than in the CMS for several reasons, including storage, workflow, and performance considerations. The Dropbox Chooser is one of 2 Dropbox Drop-ins. The "Chooser" enables users to generate a file link from a Dropbox account, and the "Saver" enables users to save a file to a different Dropbox account. The Chooser is often most useful for CMS editors.
Using the Dropbox Chooser with the eZ Publish Administration Interface saves editorial staff a lot of time by giving them direct access to the file links they need without having to jump between Dropbox and eZ Publish. The Chooser UI also allows you to upload files to a Dropbox account, making it even easier to get everything done within one operation.