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> an old Android phone into a personal cloud by installing a couple apps and putting it in a corner would be huge.

That's not a bad idea. It does seem like things have to be absolutely app driven. I wonder how backups would work with that? Multiple phones?

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The ideal thing would be if you have multiple phones and can store one offsite at a friend's house. But that requires more complicated software and assumes people have multiple old Android phones laying around. I think more likely you'd pay a cloud service to handle backups for you. You just need to provide them with a read-only key then they can access the same way you do.

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