bad description, it's a cookie blocker, not a locker Rated 1 out of 5 stars

The Priv3 Firefox extension lets you remain logged in to the social networking sites you use and still browse the web, knowing that those third-party sites only learn where you go on the web when you want them to. All this happens transparently, without the need to maintain any filters. Priv3 is free to use for anyone.

? Rated 1 out of 5 stars

What does it exactly?