Over the years, authors who wanted to promote their books directly to the public had one main option; you had to physically travel across the country conducting book signings and readings in various bookstores and praying that people would show up. This meant spending money on flights, hotels, transportation and meals. This traditional type of book tour is expensive and very few publishing companies are willing to pay for them. But now, authors have a new method of ‘touring the world’―the virtual book tour.
Virtual book tours (also known as virtual author tours, guest blogging, blog tours, or VBTs) are a simple concept. The author tours various blogs and sites that pertain to a theme in the book or to writing in general. This way, you can potentially reach thousands of avid readers each tour day from the privacy of your office or home.
The goal of marketing your book is to expose it to as many people as possible in an exciting, cost-effective and entertaining way. Guest blogging can achieve that goal. Most blogs are archived, so your post becomes permanent and often viral, spreading from site to site. That is leverage. You are in essence leveraging your internet presence and duplicating yourself with every VBT stop. Your blog tour is working for you even while you sleep. Try doing that at a bookstore signing!
Read Cheryl's article Authors Tour the World with Virtual Book Tours on John Kremer's Book Marketing site.