Many authors and journalists leverage their blogs or websites to sell copies of hardcover books. Examples include Guy Kawasaki, Seth Godin and Malcolm Gladwell.
While most of these people were already renowned authors before they created their website, one could also follow the other way around. Lorelle VanFossen did exactly that with her Blogging Tips book. First she built her authority on the subject via her blog, and afterwards she published the book.
List of self publishing and publishing services: