Man, this is so increadibly cool! - Was a user of Safari for quite some time. After reading a hacker news post about the latest Firefox I gave it a try and started looking for good add ons. And this here is one of the best!!! Always wanted to be able to navigate with the keyboard alone, also while reading a page (not only the usual shortcuts). What I also love is the colon + b command (buffers list) and then switch to tabs by name. ABSOLUTELY LOVE IT. Give me a donation address please :)