Kindle
Clunkrobot sez, "My friends made me a pixel-esque Mario cake out of little squares of cupcake for my Groom's cake." Link (Thanks, Clunkyrobot!)
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.