Here's a follow-up interview with one of the company's founders in which he goes into some detail about how the service will and won't work. If this thing launches on the terms he's described here, I'll be the first in line to sign up for it! Link (Thanks, Johann and John!)
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.