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By using Graph API I can retrieve comments, likes count of both internal and external Facebook url. But I can only get the shares count of external Facebook url
For example:
https://graph.facebook.com/?ids=http://www.youtube.com/watch?v=tu8BNocnVzc
But not a facebook one:
http://graph.facebook.com/?ids=http://www.facebook.com/photo.php?fbid=364861533533284
How can I get the share numbers of a Facebook object?
(I can get likes and comments by using this url http://graph.facebook.com/364861533533284)