P.S. I also asked this on Quora - as an experiment to see what kind of answers I'll get there vs. here. http://www.quora.com/Why-isnt-a-content-addressable-cac

P.S. I also asked this on Quora - as an experiment to see what kind of answers I'll get there vs. here. http://www.quora.com/Why-isnt-a-content-addressable-cache-built-into-the-Internet http://www.quora.com/Why-isnt-a-content-addressable-cache-bu...