Hi!
Ah, http://en.wikipedia.org/wiki/Content-addressable_storage#Open_Source_Impleme... http://en.wikipedia.org/wiki/Git_(software)#Implementation
Thanks for sharing these extremely valuable links. How did you find them?
And while you're at it, he says subversion is for goners, http://www.google.com/search?q=torvalds+subversion+git
Good for him. Should we store all our content in GIT, from now on?