Does this make the browser itself a bittorrent client, or is that done by the server?

As far as I'm aware, you need something more than HTML5 to speak the bittorrent protocol.

Awesome ... if you can keep this running this will be my de facto movie watching site. No more primewire.ag!

This is awesome! I kind of don't want to push it to be mainstream to be shutdown... :P much selfish, very excite this site