Here's a gallery of seventy horror and gore-effect Photoshop HOWTOs for bubbly burns, twisted scars, scary demons, zombies, vampires, and other spooks and scares. Just the thing for the run-up to Valentine's Day. Link (Thanks, Enrique)
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.