Rated 4 out of 5 stars

Congratulations. This is the only such extension that has a keyboard shortcut and actually works. BUT requiring about:config to change the default shortcut, which didn't work, and worse, having to find that out by looking at the screenshot on the installation page, is really bad IMO. This should be settable in the preferences, which don't exist for this extension.

This review is for a previous version of the add-on (0.2.2).