Rated 4 out of 5 stars
The really interesting thing is to run this addon in conjunction with NoScript and Ghostery and see what happens. Turns out the other two addons typically pick up more trackers and third party connections than RequestPolicy does. However, I keep RequestPolicy installed because occasionally things work in reverse, where this addon spots something that the other ones miss. A few more MB of memory isn't going to kill me!
I agree with the user below that the Beta 1.x on the developer's website is really good.