Rated 5 out of 5 stars

Fantastic addon! Really useful, it makes the middle mouse button even more awesome in Firefox ^^

By the way, you should warn users that they need to disable the "Use autoscrolling" option in "Tools -> Options -> Advanced" for this addon to work correctly. It took me a while to figure that out

This review is for a previous version of the add-on (0.3.1).