Facebook's mobile prodigy launches video charades game

Michael Sayman was just 17 when Facebook hired him, but he’d already built 5 apps. Now 7 years after his first launch, the Facebook product manager has just released Show & Tell, which turns selfies and visual communication into a game. You’re given an emotion to act out, you send the video to friends, and they try to guess what you’re feeling. “I made 4 Snaps about…