Here's some handy, infringealicious clip art for the discriminating Anon who wants to make a statement without paying a royalty: a Guy Fawkes mask, suitable for urban art, dress-up, and silkscreening.
Guy Fawkes Mask clip art (Thanks, @crisnoble!)
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.