And if setting up Multi-Account Containers just for the one scenario of sandboxing Facebook sounds too complicated, Mozilla have put together a Firefox extensio

And if setting up Multi-Account Containers just for the one scenario of sandboxing Facebook sounds too complicated, Mozilla have put together a Firefox extension that does all the setup for you: https://addons.mozilla.org/en-US/firefox/addon/facebook-container/ https://addons.mozilla.org/en-US/firefox/addon/facebook-cont... (Which, don't get me wrong, I think MAC is a great feature and use it myself for all sorts of sites. But it can be complicated to get your head wrapped around, particularly if you're not a professional nerd. Which is why this kind of set-it-and-forget-it alternative has some value.)