Rated 4 out of 5 stars
Currently I'm using a similar addon which is easier to use as it has more %variables% and not dependent on context for %titles% etc. It's called CoLT [https://addons.mozilla.org/en-US/firefox/addon/colt/]
This addon deserves a review because it was released few months before CoLT was on mozilla, and also 10kb smaller in size. Hope to see future updates.