A user access token with userfriends permission is required to view the current persons friends. If youre having issues with Facebook in Words With Friends try these three quick steps. Hence, if you use the Facebook Friends Mapper tool you may be able to view some of his hidden Facebook friends by making use of the ‘mutual friend’ logical flaw. This will only return any friends who have used (via Facebook Login) the app making the request. If a friend of the person declines the userfriends permission, that friend will not show up in the friend list for this person.