Writing a book is a great idea, and completely doable - I'm envisioning lots of people being able to put together a book from their collection of writings right here on this site. Even if Steemit never makes any of us rich, it can provide a motivation for thousands of people to write down their passions that they can then take out into the world in published form. But I do have a question about this - can people publish text elsewhere that they've published on Steemit?