title: WebRTC shim for browsers that don't support WebRTC
body: <p>Not a lot of browsers support WebRTC yet, but there's a lot of cool WebRTC stuff to play with -- PeerDB, etc.</p>
  
  <p>Is there any sort of shim for spoofing a WebRTC API in the browser (so that things like PeerDB will just work), but which actually communicates outside the browser using something other than WebRTC?</p>
  
  <p>Is that even technically feasible? Why or why not?</p>