Finally! Dropbox has figured it out. If you have both a work account and a personal account for Dropbox, you had to choose for each device which one you wanted to be logged into. It was a huge pain to switch back and forth because all files would be deleted and have to be downloaded again every time you made the switch. If you are like me, and have a couple of work accounts you have to manage—and a personal account—you pretty much gave up. Or at least I did.
Well yesterday I got the best email ever saying I could now login to multiple account on the same device! I have not tried to see if I can merge more than two accounts – I doubt you will be able to – but two is WAY better than one! https://www.dropbox.com/help/4235/en