Kindle
Baen's Universe is a new science fiction PDF magazine that sells for $30/6 issues -- it's delivered with no DRM in pure electronic form. Lots of sf writers have already sold stories to the magazine (my own story When Sysadmins Ruled the Earth will appear there) from Charlie Stross to Gene Wolfe, from Sarah Zettel to Catherine Asaro, plus David Brin, Greg Benford, and many, many others. Each issue is as long as a long novel -- 150,000 words, about twice as long as a typical sf magazine. The first issue launches this month.
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.