This is one of my favorite blogs, because they go into satisfying detail about how their stuff works; it's always entertaining to see a big company write about

This is one of my favorite blogs, because they go into satisfying detail about how their stuff works; it's always entertaining to see a big company write about how they accomplish what is it they do. I wonder if they use HTTP or Bittorrent to serve out of S3; S3 can serve Bittorrent, and the protocol solves a lot of their 'fill hierarchy' optimization on its own reasonably well.