I've largely given up caring, but there will be people who notice ...

  > app I made that maps your friend's locations.

This implies that your users only have one friend each, which might be true for some, but is unlikely for poeple who use Facebook, given the implicit defintiion of "Friend."

It's irrelevant, but I thought you might like to know.

And I haven't logged in becuase I don't use Facebook, so I guess I don't have any friends ...