Rated 4 out of 5 stars

Very good privacy addon, it works diffrently to any other privacy addon like ghostery or mask me.
It does it's job very well and rarely causes problems, and it's easy to disable the blocking for various urls.
It is still in alpha so expect problems, but so far I haven't really found any problems.

This review is for a previous version of the add-on (0.1.4).