title: Facebook mutual_friend_count wrong?
body: <p>I would like to know if anyone else has experienced this problem... </p>
  
  <p>Facebook's count of mutual friends is off by 1. One too much. But not for all friends. I've tested this through my app where the fetched mutual_friend_count does not correspond to the number of mutual friends in the fetched array.</p>
  
  <p>Further I have been checking this manually. By going to a FB-profile and literally counted our mutual friends. This also shows that we have one less mutual friend than the number Facebook is displaying in the "Mutual Friends" section on a friend's profile.</p>
  
  <p>This does not apply for all my contacts on Facebook. Some profiles are displaying the number of mutual friends corresponding to the actual number of mutual friends.</p>
  
  <p>But this do posses a problem if you are building an application/wesite/facebook app etc. that somewhat relies on the mutual_friend_count.</p>
  
  <p>Can anyone confirm this? Is this a bug? 
  Or is it some kind of setting that some users can avoid being shown in the mutual friend section, but is still counted...?</p>