There are no lurkers in the Slingshot app. It's Facebook's latest answer to users' interest in disappearing (often called "ephemeral") media and messages. What I mean by "no lurkers" is, as my ConnectSafely co-director Larry Magid explains, unlike Snapchat and Facebook's now defunct Poke, "in order to view someone’s photo or video, you have to send one back [in Slingshot] Facebook bills the app as … [Read more...] about Facebook’s new Slingshot aimed at Snapchat