Kindle
RPS25 is a rock-paper-scissors variant with 25 hand-gestures that combine to make 300 possible outcomes. The chart is a hoot! Link (Thanks, Fipi Lele!)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.