My current Dropbox set-up: three hard drives, two of which are SSDs, each of which have a different OS (Windows and Linux respectively) and one really big HDD with NTFS to share data between the two of them. Which also is the Dropbox folder. In practice I only reboot to Windows to defragment the NTFS drive drive, but sometimes it's useful for develpoment.<p>Makes it quite easy to migrate to a new computer, or do a fresh install if I want to clean up the OS.<p>The only hassle is that Dropbox doesn't let you link an already existing Dropbox folder in Linux. Which is fixed by renaming the folder, "creating" a new one, moving all hidden files to the renamed folder and renaming it back.<p>I'm considering moving to another service, but it's just so convenient and the price is OK.