Kindle
Mesh Networks of Orlando, FL, have produced a wicked-cool 802.11-alternative, using declassified military tech. In addition to all the WiFi goodness you know and love, Mesh handles Quality of Service, relaying, dynamic routing, non-GPS geolocation, and tons of error-correction stuff. There's even some cross-compatibility with existing 802.11 cards and access points! I am so all over this. 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.