Nifty emacs trick: impatient-mode for instant buffer sharing

It may only only be 10:20am, but I'm willing to bet this is going to be the coolest thing I see all day. Perhaps all week. Lifted from this post: Emacs: Peer-to-peer coaching is easier when you use impatient-mode to share your buffer I typed the following into emacs:

 M-x package-install impatient-mode
 M-x httpd-start
 C-x b foo
 M-x impatient-mode

I then opened up: http://localhost:8080/imp/ and clicked on foo. As I typed in emacs, my browser automagically updated:

(Yeah, that static screenshot doesn't do the functionality justice.)

I have no idea how I'm going to put this capability to work. But the fact that it just magically works leaves me in awe.

Emacs just never ceases to amaze.