Private Chat

I'd like to see an option to send someone a private chat message in-game. Then, at the end of the game, maybe the private message log could be displayed to show what went on behind the curtains. This would allow for diplomacy behind the scenes, but of course if an agreement were to be MADE and get by the haggling stage (which would take place in private chat if you're the subtle type) it would have to be announced publically.
Thoughts?
Thoughts?
