Here's a short video mapping in time-lapse the spread of Wal*Mart stores in America, from a few lonely dots in the sixties to a rising torrent that ends with an America blanketed by the blight. Link
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.