If your fingers are hardwired for vi/m this is essential Rated 5 out of 5 stars

If you use vi or vim then this will revolutionise your browsing. I've been using it for a couple of weeks and can't imagine going back.
e.g.
17gt ... Jump to your 17th tab
:t vimp tab ... tab through your history matching "vimp" and when you get the match hit enter and it opens in a new tab
y ... yank the current url to your buffer

I've also set the default search engine to yubnub so :t gets me straight to a yubnub.org command. (To do this add yubnub to your search box and then :set ds=yubnub)

Incredible!

This review is for a previous version of the add-on (0.4).