It was great while it worked.
Right now it seems to have issues with Facebook for some reason.

I'm using Ghostery right now to block it but the problem is relatively new.

If I don't disable this extension facebook just never finishes loading, and all the other pages freezes.

I get a message that tells me "Do you want to stop the execution of this script?", this is a bad translation since I use the Spanish version of Firefox.

I used to find it fine, but since I stepped up my security and enabled the 'always private browsing' in Firefox, I can't use the Facebook Container. Please fix this as even thogh I don't have a Facebook account, I have been getting Facebook pop-ups, despite having Mozilla recommended ad and tracker blockers (I have 9 of them).

excelente!

None of the "Messenger in the sidebar" addons with with this. Any chance you can provide a working solution for this in your addon?

händer ingetting "Fliken är blåfärgad för att indikera att du är inne i containern." helt vanlig fb inlogg?

اضافة رائعة لجعل مستخدم هو صاحب قرار موافقة على جمع بيانات كانها باب تفتح للموقع اللي انت تريد

Excelente implementación de separación de usos en firefox. Hasta ahora sitios web usuales funcionan sin ningún problema. Y aunque no tengo cuenta de facebook seguro detienen seguimientos indeseados aún cuando no tengo cuenta.

Update Dec 2020:

Facebook has found a way to track around it, I've been getting ad's for stuff I just browsed again.

Original review:
To all the people complain it breaks other websites, that's the point of the container! It's to help stop facebook from spying on you everywhere you go, blame the broken websites for requiring facebook to log in or implementing their tracking bugs.

Review: It works great for me, every since I started using it I'm noticing a lot less targeting advertising on facebook from things I do elsewhere.