PRIVACY AND CLOUD STORAGE

It's difficult to know what you mean by cloud storage here. Partly this results from the complete obscurity of the term most of the time, as a buzzword without concrete technical meaning. But here, by including email held in ordinary spools, you seem to mean by "cloud storage" all non-local storage. And your legal discussion, such as it is, concerns updating ECPA, which—for reasons you give in the course of the discussion—is orthogonal to questions about "cloud."

I doubt the effectiveness of your disclaimer at the top, for this reason. Email servers can be said to have a location, and the law that applies to them is, as the saying used to be among pretentious international law types, lex loci server. What might be meant by "cloud storage," however, would be clustered file systems deliberately straddling jurisdictional boundaries (indeed all boundaries), where merely determining the law governing any individual quantum of data at any fixed time may be impossible.