Q: How can you contact the winner on an Apple Game Centre leaderboard? I'm about to launch an iOS game, with game centre support. At the end of each month I would like to contact the winner and offer them a prize. Is it possible to do this though the iTunes connect, or some other system?
I can't find much within the Apple developer doc's and the alternatives all seem a bit long winded.

A: You cannot do that. The Apple guidelines strongly suggest that they want to keep the personal details of the user away from the developers. Also, it is not a good practice to incentivise the winners outside the app! 
Plus as Paulw11 put it, the Game Centre leaderboards are usually spammed, and you finding a player with a genuine high score is difficult.
Hope this helps. 
