I've just tested this out, and it works brilliantly. Thank you Mozilla, give the competition a run for their money!

Seems to work great in my limited testing.

Mozilla continues their nice comeback story.

Anything to stop Facebook over step into its members and members who left Facebook and still get notices from Facebook is a great thing. This should be available on all Browsers. Thank You Firefox for leading the way again. I left FaceBook, and I will never return to it. I don't miss the Progressive Liberal Communist who run it.

Messenger is also a facebook service but open outside of the container. I think this container need to store any facebook affiliated service/site as messenger, whatsapp and instagram.

good!

A much needed service. Large scale data mining by corporations that do not have the users best interest at heart has gotten out of hand. Thank you for providing a simple way to fight back!