We already know Facebook is leaking your sexuality to advertisers through its data-rich demographic targeting system. And there's the possibility Facebook's check-in platform Places could let your friends reveal you're a big homo without your consent. And there was that time Facebook let any of your friends spy on your person IM chats, possibly reading in real-time about your steamy gay affair. And there was that computer script some college students built that could pretty accurately guess if you're gay simply by seeing what kind of company you keep in your social network. Let's add one more potential means of Facebook outing to the list.