very good, with a annoying glitch? Rated 4 out of 5 stars

Overall, this is a very useful add-on if you have a need for switching proxies on occasion. However, if you try to launch Firefox to establish a connection at some paid access point (like HotSpot or at airport, which requires you to login using your paid service), the browser simply does not launch properly, even if FoxyProxy is installed (you have to *totally* disable using Tools->Add-ons menu); it seems the initial checking of some sort by FoxyProxy is getting in the way. Other than that, this add-on offers a lot more functions than regular users would need, but is very useful.

This review is for a previous version of the add-on (2.5.3).