I have 20GB on my iPad and iCloud has just finished backing up into the cloud. Of my 5GB there's still 2.5GB left, so what has been backed up, and what not? How, for example, can I make it backup my movies? Or indeed make sure that no movies ever get uploaded? I don't understand what the purpose of iCloud is, I suppose. I would get it if I had enough space to up my whole pics/music/videos, but even the 50gb on offer wouldnt be enough for that.