Can Twitter be part of your book marketing and book publicity campaign? It can, according to what this book publicist has seen and what novelist Helen Clark has experience (see her excellent Huffington Post blog, “Making Twitter Work for Your Book“).
Twitter, like blogging, can connect authors with their target readership quickly, and can be instantly gratifying. Book marketing means making those connections, and using those connections to build your brand, and Twitter can be an important part of the platform that you use to sell your books and your expertise. In other words, yes, Twitter can be part of your book marketing and book publicity campaign.