Back in 2009 Tim Berners-Lee drafted a web-specification for "Socially Aware Cloud Storage":There is an architecture in which a few existing or Web protocols are gathered together with some glue to make a world wide system in which applications (desktop or web application) can work on top of a layer of commodity read-write storage.Crucial design issues are that principals (users) and groups are identifies by URIs, and so are global in scope, and that elements of storage are access controlled usi...