There's a more specific description about how information from social plug-ins are handled: https://www.facebook.com/help/?faq=186325668085084 https://www.face

There's a more specific description about how information from social plug-ins are handled: https://www.facebook.com/help/?faq=186325668085084 https://www.facebook.com/help/?faq=186325668085084 In particular, information from social plug-ins are specifically not used to target ads to users.