Rated 5 out of 5 stars

per Ted Clayton el feb. 25, 2011 ·

Sounds like it would be of great interest, but it wouldn't install for me (v3.6.13):

"Firefox could not install the file at

https://addons.mozilla.org/en-US/firefox/addon/6231/contribute/roadblock/?src=oftenusedwith&version=0.110123.17

because: Invalid file hash (possible download corruption)
-261"

This review is for a previous version of the add-on (0.110123.17.1-signed.1-signed).