5 out of 5! Rated 5 out of 5 stars

1. does exactly what it say
2. efficient
3. quick, patient reply from writer....and this add-on does improving!

some ideas...
a. i prefer short-cut to menu item, maybe an API to add rule would be even better, then i can easily add site rule through mouse gesture.
b. And how about some species site block tab pop-up while the others just block pop-up windows?
c. import/export rules

wish this add-on passes the review of Mozilla soon, now i have to check this site regularly to update it

This review is for a previous version of the add-on (0.1.8).  This user has other reviews of this add-on.