Get the number of friends of a friend

I'd like to get the number of the friends o开发者_JAVA百科f a friend. Do you know if it's possible ? I am tempted to say yes as this information is public and disponnible on the public profile of a person.

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This is not available through the API. If you try, it will give you an error message like:

Can't lookup all friends of (ID). Can only lookup for the logged in user (ID), or friends of the logged in user with the appropriate permission.

You would have to break the Facebook TOS and scrape this data, and its not always publicly visible for every user.