Show HN: Firefox Addon, Supertab - list of tabs in most recently used order

https://addons.mozilla.org/en-US/firefox/addon/supertab/

Addon provides a list of tabs in most recently used (MRU) order. Triggered by Ctrl-Tab or Alt-Tab.

I made this addon during Christmas vacation. Inspired by the addon LastTab (which stopped working after FF's change for addons from XUL to JavaScript) and Opera's MRU tab list.