Dropbox - A royal PITA. I had to cancel.
I endlessly got a message saying "There is no application set to open the URL..." (followed by a lot of incoherent garbage). Neither "choose application" or "search app store" yielded any help. WORSE, this idiotic message would appear endlessly, no matter how many times I hit "cancel" and would appear in FRONT of every other window.
Who needs this ***? As I was deleting the account, it told me I was already out of space...I only had six items, but it had prompted me to put camera uploads in there.
As far as I'm concerned, this is a scam operation.
Review about: Dropbox Account.