Here's a quick and clever HOWTO for making a camera-stabilizer out of some twine, a screw and a washer. Tie the string around the screw, screw it into the tripod mount on your camera, drop the other end of the twine (with the washer attached) onto the ground and stamp on it. Pull up on the camera until the twine is taut and vertical shake is a thing of the past, along with significant dampening of horizontal shake. Link (Thanks, Fipi Lele!)
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.