Facebook Marketing Facebook Marketing We may participate in Facebook’s ‘Custom Audience’ program, which enables us to display adverts to our existing supporters when they visit Facebook. We may provide your email address, mobile number and address to Facebook, so they can determine whether you are a registered account holder with them. Our adverts may then appear when you access Facebook. Your data is sent in an encrypted format that is deleted by Facebook if it does not match with a Facebook account. For more information please see Facebook Business and Facebook’s Data Policy.