i read the description and it mentions a vim M command. i did not know this one. it is pretty boring. then i figured maybe it's about marks, i.e. the 'm' command. now that is nice. i use firefox though...
you want pentadactyl. it's better than vimium anyway.
That is what happened in my brain, as well. I had to actually type it on my keyboard in order to understand what it does. Vim is just too coupled to my muscle memory.