I'd like to know if anyone out there has customized/created some rules for secret player communication. Let's say, "talking" via post it notes so that you and your alliance partner/s can exchange information secretly. We embedded this into our games, but we are sill experimenting with rules that encourage or reward secret communication, since our group likes political intriguing and overall a more political aproach to the game. Secret communication has lead to some very interesting scenarios and brings a little more military action and trade to the table. But still it is not a really "integrated" experience. Instead it is more like a "metagame change".
How about you?