Stories from the Strangers' Universe on 24symbols.com. Ebooks from the cloud. Free as in freemium. Just like Spotify except for books. Direct link to read the book: Stories from the Strangers' Universe.
For more information please visit 24symbols web page. You can read books via browser or iPad application. And it's free, did I mention it already?, as in freemium. 24symbols have shared a presentation about their business model.
For all authors, 24symbols offers a new platform for publishing.
This presentation is also found from slideshare.net