One of the maxims about cloud computing is that you need to learn to let go: People who are stuck in the past, whether its for general file storage, music or video services, or whatever, need to learn to accept the fact that this new thing isn't going to be exactly the same as what they used to use. It will be better in important ways; after all, that's why we make these changes. But there will be some features, some functionality, that disappear in the process. And letting go of them can be hard.

(This is, of course, the whole point behind the "embrace change" mantra. But like all advice, it's easier to give than it is to receive.)