I was walking past my local Tesco's store yesterday when I noticed this peculiar security sign; my wife said, "Huh, their security must be supplied by the same people who design Portal levels."
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.