@krock
I think using uBlock Origin with Anti-Facebook filter enabled and only visiting facebook via Firefox's Facebook container will keep you safe from them following you around the net.
Btw, you can get some insights into that fingerprint issue here:
https://coveryourtracks.eff.org
@krock
Or maybe Mark will just link you guys as a family or coworkers and will use it to suggest friends :)
@m_svo Thanks. I did all that and then realized from EFF that my fingerprint was very unique. I know I am no match for the Zuck. I think having some other random people logon to their Zuckbook accounts on my browser should throw them off. I know I know, I am paranoid.