Pretty cool extension Rated 4 out of 5 stars
This extension does exactly what it says. Its pretty handy for many situations, and I've never encountered a problem. Kudos to the developers!
I only have one major problem: For my purposes, it would be MUCH more useful to have an option for site white-listing, instead of black-listing. Thats the only thing that prevented me from giving it a 10/10.
Great job. Hope to see more useful extensions like this.