1 answer
You need to put an app on your page
https://facebook.typepad.com/faceblog/2008/11/comment-creer-un-compte-a-rebours-sur-son-profil-facebook.html
https://facebook.typepad.com/faceblog/2008/11/comment-creer-un-compte-a-rebours-sur-son-profil-facebook.html