[untog]

Wow, that's amazing. I had no idea Amazon offered that.

I also have no idea when I'll ever use it, but still. Damn cool.

[toomuchtodo]

Not only can S3 serve the file as a torrent, if you provide it as a torrent link and have disabled read access to the file, S3 will still serve as the tracker as long as other peers in the swarm have a full copy of the file to serve.