If you’re using Dropbox on your mobile device, you can choose to have the pictures you take with your phone or tablet automatically uploaded to the cloud in a folder named ‘Camera Uploads’. Mirroring the feature on its desktop counterpart, Dropbox for PC and Mac now lets you do the same thing with every screenshot you take. The link to the screenshot file will be automatically copied to your clipboard.
Additionally, the update for Mac users includes an importer that lets you copy your photos from iPhoto to Dropbox.
Source: Dropbox