I'm on Fedora 17 trying it on Chrome. Only the ":command"s work. Tried to email feedback as per instructions but receive this alert:

Sorry your feedback could not be send :-( Please try again.

Works fine on Firefox but the feedback functionality is broken there too.

I've pushed some changes out for this. I'd appreciate if you could confirm it works as expected now.

Did not work with Conkeror (based on emacs) either.

It doesn't integrate very well with vimperator either...

Hit the Insert Key, this ignores every vimperator command until you hit Insert or S-Esc.