Works, but not good Rated 1 out of 5 stars

BEWARE - if you install this script, and add sites to the blacklist and then uninstall it later, the sites are STILL BLACKLISTED and WILL NOT WORK PROPERLY. You have to REMOVE ANYTHING YOU PUT IN THE BLACKLIST FILE, THEN UNINSTALL THE ADD-ON. Pretty big oversight in the script writing and code!

This review is for a previous version of the add-on (1.9).