I use a lot of cloud services for file storage, primarily Dropbox, but also Box and (begrudgingly, for certain shared projects) Google Drive.I also use iCloud, but not in any way that would be considered a true cloud file storage service. I use it strictly as a sync service for contacts, calendars, reminders, notes, Safari; I also use Back to My Mac.
But that’s it; I don’t use iCloud for cloud-based file management at all. Why not? Because iCloud in its current implementation is chock full of the stupid, at least for those of us who still use and rely on OS X.
When people say, “Apple doesn’t get Web Services”, this is a great example of what they are talking about…