[inanutshellus]

Even without a facebook login, facebook still tracks your actions on (virtually) every site you go to, due to facebook API tagging in websites. "Like this page", "Add a comment via the facebook api", "log in w/ facebook", etc. all call home. Even just loading the facebook "Like" images calls home, is logged, and tracks you.

[tremguy]

That's client side. If you load 3rd party content into your browser or fail to block, that's on you. I thought usage of ublock origin/privacy badger could be implicitly assumed among the HN crowd.