Is this submitted in relation to decision/game theory, signaling, or something else? In any case, I think a bit of elaboration would be more appropriate than a lone link.
I was expecting a joke, but it's not even that.
In relation to general decision making or a benignly entertaining example of two rationalists practicing Aumann's Agreement Theorem.
This is preference negotiation, not changing their viewpoints about external reality. So this is not an example of Aumann's Agreement Theorem.
http://nymag.com/daily/intel/2010/11/this_is_how_bill_and_hillary_d.html?imw=Y&f=most-viewed-24h10