My play group had a question about whether the barter & crook tiles should be kept behind your screen or in public till you use them. The rules don't state this clearly, only stating that cubes and money are kept behind the screen. It makes a difference, in that holding one of these creates an incentive for the other players to make you take your turn later.
****We play it in front of the screen. And I believe it should be there.
Zev Shlasinger, President
Z-Man Games, Inc.