If you are writing ebooks, you should consider having your own Facebook Fan Page.
This video will show you why and how EZ it is to create a Facebook Fan Page:
Your readers will totally appreciate interacting with you on your Facebook Fan Page. It gives them a chance to know you and your characters. By building a relationship with your readers, they will recommend your ebooks to their friends who will recommend your books to their friends. Pretty soon, you’ll have a loyal following who might even let you know what your characters should do next (smile.)