Did you know that when you make changes to a file you have in your Dropbox, the cloud service actually remembers those changes? In fact, Dropbox retains unlimited versions of your files for 30 days.
That means you can go back and recover a single deleted sentence from a text file, for example, but this feature also has the potential to radically change how you work. With a free Mac app called Revisions for Dropbox, you can really dig in and use this Dropbox feature properly.