Love it! Firefox's containers are the killer feature that led me to make Firefox the browser I use almost exclusively. And the Facebook container is the one that started it all for me.

Doesn't work very well as I still get targeted ads after looking something up in a different tab.

still able to "like FB" on other website

Excellent

Great addon that seems to do what it says. However, it's not available on Firefox mobile.

With Facebook Container turned on, when I type a message to someone over Facebook, it becomes jumbled and a mess. Pressing enter closes all chats, amongst other annoyances.

With Facebook Container turned off, all of these issues go away