Rated 4 out of 5 stars

Pretty good once you clean out the defaults and put in your own backgrounds. Doesn't serve much purpose and the configuration might be confusing at first, but works as advertised and doesn't noticeably slow Firefox down. No real incentive to add personal backgrounds to the website, but the option is there for any attention-starved artists out there.

This review is for a previous version of the add-on (0.5.5).