Kindle
ExLibrisAnonymous is one of my favorite sources of cool junk from the Internet. They buy crappy library hardcover books of childrens' stories, teacher's manuals, and dull nonfiction titles, and spiral bind the front and back covers around a sheaf of blank white paper, throwing in some of the plates or pages from the original book in the middle. At $11 each with shipping, they're a great gift item. The store just posted a bunch of new "titles" today, and I bought six as Xmas gifts.
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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.