This has a real limitation, which is that if you click an external link on your Facebook newsfeed, the new website will also be in the FB container. On the one hand, that keeps your FB-related browsing from "contaminating" your other web cookies. On the other hand, all the websites in that container get to link you to your FB account just like normal.
This has a real limitation, which is that if you click an external link on your Facebook newsfeed, the new website will also be in the FB container. On the one hand, that keeps your FB-related browsing from "contaminating" your other web cookies. On the other hand, all the websites in that container get to link you to your FB account just like normal.