I feel like I've seen this pop up a few times now, but this is really, really cool stuff. The only thing that concerns me about the growing popularity of using WebRTC is the security concerns around unknowingly joining a p2p network like this for potentially any site you visit. It's not hard to imagine what a bad actor could do to content before passing it along, or more simply, the fact that your true IP is exposed.

Curmudgeony security issues aside, this undeniably feels like The Future™ and a big deal to watch out for. It's also one of those cases where a creator / maintainer makes a huge difference for long term viability in my opinion. Feross is crazy smart and has been working with all the related tech for a while now (via PeerCDN, Instant.io, etc, etc), and is just an all around respectful, nice guy, which is important for the continued development / community aspect.