It's not just about ads .. they can just show them to this visitor if it was. It's about targeted ads. They have slightly limited ability to target if the viewe

It's not just about ads .. they can just show them to this visitor if it was. It's about targeted ads. They have slightly limited ability to target if the viewer doesn't sign in .. for which the viewer needs to accept their T&C .. which is needed for them so someone doesn't sue them for invading their privacy without their consent. IANAL so I'm not sure whether such a suit will stand in any court.