Good news for naked celebrities: A new app lets people send sexts with less chance they'll leak online. Snapchat allows users to set potentially embarrassing photo messages to delete themselves within seconds. It even warns senders when a recipient tries to take a screenshot of a message, the website psfk reports. Of course, as the New York Times points out, "there’s nothing to stop someone from taking a photograph of his smartphone screen with another camera." (More sexting stories.)