https://qz.com/1238516/mozilla-firefox-has-a-clever-workaround-for-facebook-users-worried-about-privacy/

Mozilla is really taking advantage of Facebook’s latest troubles. First, in a splashy PR move, the company behind the Firefox internet browser pulled its advertising from Facebook. Now it’s also offering its users a way to bypass the social network’s controversial data collection practices.

The “Facebook Container” is a browser extension that, as the company says in a blog post, “isolates your Facebook identity from the rest of your web activity.” What this means is that when you’re logged onto Facebook on Firefox, the platform will be separated in a special walled-off tab—”the container.” The goal of the container is to make it harder for the social media giant to track what you’re doing on other sites through third-party cookies. When you click on a Facebook link on an external site, it loads into the container, and if you click on an outside link on Facebook, it loads into your regular browser window.