Personalthreatlevel lets you create your own custom DHS-style threat-level that will serve you well as a means of frightening the people in your life with nebulous, ill-defined scariness. Here's Bruce Sterling's Tumblr version.
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.