Just a few reasons why Linkedin is a great tool for authors…
Google Points: LinkedIn gives you “Google points” for the sites you link to from LinkedIn. It also ranks very high on Google.
Feature Your Book: In the “Publications” section, you can list details about books–synopsis of each book and a link your book’s page on Amazon or another online retailer, or even your website.
Import Your Contacts: LinkedIn makes it easy to connect with the people you know by allowing you to import your contacts into the system without worrying about spam. You’ll see your contacts and those who already have an account on LinkedIn. You can send those people a LinkedIn connection request.