* How to install an extension:

  Drop the .py and .ephy-extension (or the .xml, if you're still using
  Epiphany version 1.8) in ~/.gnome2/epiphany/extensions/

* What do they do?

  The "alt-d" extension adds ALT-D as shortcut to focus the location entry,
  for people who're not yet over their IE habit.

  The "window-icon" extension sets the active tab's site icon as window icon,
  in the same way as Epiphany versions <= 1.8 (this misfeature was removed
  from versions >= 1.9).