I've seen Leanpub (http://leanpub.com/ http://leanpub.com/) mentioned in the last few ebook threads. If I understand correctly, you write in markdown and save

I've seen Leanpub (http://leanpub.com/ http://leanpub.com/) mentioned in the last few ebook threads. If I understand correctly, you write in markdown and save it to a shared Dropbox folder. They handle all the compiling for you. I'm writing an ebook about nootropics right now and am using Scrivener. It's really great for organizing and rearranging your content. It's an executable, but if you save the files to Dropbox you can work on it anywhere (which has Scrivener installed)