Rated 4 out of 5 stars
Firefox 23.0 update causes a problem. The application claims "not in domain list". This can be circumvented by invoking the page source, but that means an unnecessary extra step.This review is for a previous version of the add-on (0.9.5.1.1-signed).
Thanks for the problem report. It is a FF23 issue only.
A new version 0.957 will be available at home page http://users.skynet.be/mgueury/mozilla tonight (14 august 2013).
Then it will take some weeks to be approved and published in this site.