Here's another gem from the OKCupid message box:
Subject: Hello rad quiver match!
Message: So I saw on the 'The Two of Us' section that you're not willing to have an open/poly relationship. That's a shame since we seem to be, like, the same person otherwise. Anyway, just wanted you to know I think you're rad.
Aww! We'd totally be the same person if it weren't for the fact that we have diametrically opposed views on the value of monogamy and fidelity! Rats!