Edit again: the auto focus-switching thing seems to be fixed :)
Edit: Okay I found that Firefox Multi-Account Containers extension and that's pretty much exactly what I was looking for so... :D
Fantastic. I would love a 'generic' implementation of this for any arbitrary site! Though I don't know what specifically goes into containing any single website in terms of maintenance when that website updates or uses unexpected content networks/resources and that sort of thing...
My biggest complaint is that it should not automatically switch focus to the FB page when I open FB in a tab. If not for that, 5 stars.

Great plugin. If you love this plugin, consider getting the Multi-Account Containers extension to use with all the sites you visit: https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/

Super, konečně se rozhodl někdo postavit facebooku. Jen tak dál ! Moc děkuji :)) super doplněk.

1a Aktion von Firefox, Addon funktioniert klasse

Excellent. Should be part of Firefox by default.

Stops facebook from spying on you when you're browsing internet. Thanks Mozilla team.

It does what it does! Please includes other facebook product such as messenger and instagram.
* checked out github, messenger is included next revisino

A very easy and effective way to stop Facebook from tracking me.