The way FB tracks non-users is one of the parts that bothers me the most. One old article I read talked about a "shadow profile" that would track you across sit

The way FB tracks non-users is one of the parts that bothers me the most. One old article I read talked about a "shadow profile" that would track you across sites, ready and waiting for the day you signed up. That way they would have profile data on you from before you ever consented.