Heh, no worries.
I always considered all those brutal asterisks in the title ugly, so I simply use a modest " - Spoiler", but that was apparently asking for trouble.
As for diplomacy, I actually think people will have to help themselves. You can send messages in the game and in such messages you can ask for someone's e-mail address, phone number, Facebook account, Twitter account, fax number, residential address, work address, have covert representatives meet at undisclosed locations... I'm sure people will work it out.