Rated 4 out of 5 stars

Great addon for sure, and I've been using it for quite some time, but I would appreciate an update on this making it compatible with Firefox 21.0 (Nightly). I had the same problem with Firefox 20. It says the session was corrupted everytime I start Firefox.

Other than that; great addon!

This review is for a previous version of the add-on (0.7.9.3.1-signed).