Rated 5 out of 5 stars

This is a fantastic extension that has helped me a lot whilst testing my extension with other locales. The only slight improvement I'd like to see is that the extension switch the User Interface (general.useragent.locale) by default without my having to enable in in Options - but then, I am coming at things from a developer point of view!

This review is for a previous version of the add-on (1.7.5.1-signed.1-signed).