However, I not sure its that easy to understand for those who don't know what "location" means, and the text is slightly small and hard to read. It would be a great improvement if they showed a small help text if one hovered over a label inside one of the yellow boxes.
Still, a very excellent job of EFF.
Also, using a help window when hovering would be a quite better UX than a glossary.
Seeing as HTTPS sites could not previously share an IP address, making it obvious which site communications with any given IP address was directed towards, an extension was developed that now sends the desired host unencrypted before the encrypted package.
This doesn't yield any more information that could previously be derived, but does allow you to serve as many HTTPS sites from a single host as you wish.