I and a friend have co-authored a planned series and are putting it online in episodes. We're using the Book module, tricky captchas, printing, and some more. The website is located at http://erion.tdrealms.com/books/
Hope you like it!
P.S.: We're non-natives, and we don't have any writer clubs and such around us to help and look over our shoulder. Any comments you leave on the chapters is appreciated!