Are you using Facebook? You are being tracked!
You don’t use Facebook? No matter, because the online giant is tracking users and non-users alike.
An article by Gavin Phillips in the MakeUseOf web site offers suggestions on how to reduce the online tracking. Actually, it is impossible to stop Facebook’s tracking entirely, but you can reduce it.
Take a look at http://www.makeuseof.com/tag/facebook-tracking-stop/ for suggestions.