Previously we've covered Dropbox Automator, a sort of IFTTT for Dropbox. (IFTTT, if you haven't heard, automates tasks to trigger when a particular action has occurred, e.g. if a Facebook profile picture changes, then update a Twitter profile, etc). Like IFTTT, Dropbox Automator is capable of triggering a similar series of actions, based on what kind of files have been added to your Dropbox folders.