But isnt it true that even for persons who have FB accounts but never use them, because of the presence of "Like buttons" or similar beacons, FB is still setting cookies and tracking those users, as well as non-members, as they navigate the rest of the web.
This assumes that those persons are 1. using browsers that automatically load images, even ones that serve them no purpose and exist only to feed data back to FB and other third parties and 2. taking no steps to prevent their computers from accessing these Facebook domains.
This assumes that those persons are 1. using browsers that automatically load images, even ones that serve them no purpose and exist only to feed data back to FB and other third parties and 2. taking no steps to prevent their computers from accessing these Facebook domains.