Robert, as Timothy mentioned yours is a well thought answer that certainly illuminates issues witht he cloud I had never considered ...

My only question concenring the points you raise would be surely the larger players etc would have considered the legal ramifications, especailly the issues concerning the Data Protection Act etc and would have factored that into their plans (one would at least hope)

And yes I do tend to agree... its a new name for an old concept

kind regards

~si