Leo Babuata has written a book titled 'The Effortless Life.' Although that in itself is quite the feat (many people say they want to write a book but never get around to it), he has decided to make it available to the public in a very interesting and innovative way. Written in Google Docs as a public document, he allows anyone to edit and even add to 'The Effortless Life.'
An experimental project of sorts, 'The Effortless Life' will actually get published. In fact, crowdsourced contributors will be credited at the end of the book once it is (of course, they must not forget to add their names). Considering that 'The Effortless Life' is a book about life, majority of people would be able to contribute if they wanted.