This morning we posted the "Nefarious O Value" theory of the mystery Facebook Stalker feature. Now, a second tech-savvy tipster writes in with step-by-step instructions for how to find Facebook's unexplained "O" ranking for every single one of your friends on the site. In other words—from what we can gather, at…

Yesterday we posted five theories about the mysterious Facebook Stalker feature—the one some people think is an undercover way to identify those ex-lovers who are still pining for you, although that is totally unconfirmed and probably false. But we have to admit, none of those theories involved any weird computer…