Rated 4 out of 5 stars
Firefox has needed something like this for a LONG time. The ability to selectively allow/deny third party requests is not a panacea but it IS an absolutely essential... CORE... feature when it comes to security and privacy. Bravo to Mr. Samuel for doing what others could or would not!!
I was surprised by how little time it took me to configure things for the thirty or forty sites I most frequently visit. There were one or two glitches (which I did not investigate), but overall the addon worked quite well.
I am hoping that development and testing of this addon will continue. Perhaps with the help of a forum at RequestPolicy.com where supporters may contribute to the effort and communicate with others.
Thank you for the positive words. As for a forum at RequestPolicy.com, I haven't decided about a forum yet (I may keep using http://forums.mozillazine.org/). However, I'll probably at least setup Trac or something similar in the near future so that bug reports and feature requests will be easier to keep track of as well as easier for people to voice their opinions on (and maybe even contribute code to).