Yes, in the old days, is all we had was a public forum in each game, with the option to write to certain players. I'm still waiting for a public forum to declare my intents to all players.
As for the publicizing of messages after a game has finished, I don't have any real problems with it, but I can see how people might. Perhaps an "option" to reveal, although you would probably need both parties to agree...
I would be VERY interested in how Rait works his magic, but I think it would very much diminish the mystery, and behind the scenes magic. Although it would be very nice to look back and say, oooh, that crafty bugger, that's how they got me.
I wouldn't mind showing all my chat logs, and although I'm afraid that it will undermine my future masterminding and plotting, I'm sometimes quite proud of my deviousness. Hehehe.
Ah well, as it is, I don't think that it should be implemented, especially not as a compulsory revealed. If an option is not too much work, then go ahead, but I'm fine with the system as is.
If there was a public forum in each game, at the end, it could become customary to reveal one's wheelings and dealings to the rest of the players.