Not a massive amount of extra storage, but FREE nonetheless. Enjoy!
Get 3 GB of bonus space when you start using Carousel, the new gallery from Dropbox for all your photos and videos.
All you need to do is install the app on your iOS or Android device and verify your email address (if you haven't already). The bonus space will appear instantly in your Dropbox.
iOS iTunes App here
Android Google Play App here
Requires iOS 7.x
Note: The Carousel bonus replaces the Camera Upload bonus that was offered with the Dropbox app. If you’ve already received the full bonus space from using Camera Upload, it can’t be credited again. You can check if you’ve received the bonus space in your account settings.
"we are not accepting new users to Carousel"