Works very much like Vimium on Chrome. I've been a Tridactyl user before, but since the recent retraction from AMO, this addon has been a godsend.

Awesome extension. A must use, dare I say.

I have one question that might be related to FF, since another extension (Imagus) is also affected.

Whenever I open a new instance of FF Dev. Both extensions starts disabled. I have to disable then enable again. Any help?

Really nice and well-built extension. For Vim people, a must-have to keep our hands away from the mouse.

Great work. Very useful.

It is a pity that "o" does not focus on firefox's awesome bar directly.

Also, what is insert mode in Vimium ???

I'd give it 5 stars but, when I open a page in reading view mode (by pressing F9). The addon becomes disabled.

Other than that it has been great

awesome

It is very useful. I really like the way to scroll using j and k key (I personally map lowercase j and k to scroll half-page, which is very helpful)!
But I would say the most helpful feature is the link hints, which allows me to open links with keystrokes instead of mouse click.

Russian:
Очень понравилось, что прокрутка клавишами j, k происходит без задержки (при включенной плавной прокрутке). Также приятно, что можно гибко настраивать список игнорируемых сочетаний для каждого сайта.

English:
It's a pleasure to scroll the screen by j and k keys without delaying (if smooth scrolling is enabled). Also very useful is the ability to configure the ignore list of key bindings for each site.