[jjeaff]

>tracks logged in users

It also tracks logged out users. Assuming you didn't log out of Facebook AND clear your cookies. Logging out of Facebook merely marks you as logged out. But the cookie remains and they use it to track all the sites you visit.

[eecc]

Just curious, but blocking third party cookies would also stop the tracking or it uses some server-side library to embed the cookie in the site’s domain?

[inlined]

JFC. How does logging out of Facebook revoke all OAuth tokens for linked accounts on that machine but they still leave a token to track your movements.