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. The result is that storage becomes a commodity, independent of the application running on it.
I must confess that I am a big fan of TimB. Every since I read his note on Semantic Web, I keep going back for more. His ideas are fascinating and have deep impact on the direction of the web and web technologies.