Would be interesting to know how he did it in detail. Twitter does not contain age, neither does LinkedIn (or at least not show it) And in facebook you need to

Would be interesting to know how he did it in detail. Twitter does not contain age, neither does LinkedIn (or at least not show it) And in facebook you need to jump through loops like user_birthday and friends_birthday[1]. I don't know how to get the birthday of 3rd parties. [1] https://developers.facebook.com/tools/explorer?method=GET&path=me%3Ffields%3Did%2Cname%2Cbirthday https://developers.facebook.com/tools/explorer?method=GET&#3...