I feel as though it should be noted, for those unfamiliar with webtorrent, it is entirely disconnected from the main bitorrent swarm as it is incompatible. It would, though, make for an internal CDN between the users/peers. The jaavscript would be a plugin on the server, but then also as javascript on the page loaded into the clients browser giving the ability to share the content on the page browser-to-browser.