Steven Holzner, contributing editor at PC Magazine, is the author of 108 computer books that have sold more than 2.5 million copies and been translated into 22 languages. He specializes in Web topics such as Facebook, search engine advertising, and viral marketing. His most recent Pearson book is Facebook Marketing. Nancy Holzner's many books include Google Apps: The Missing Manual and eBay: The Missing Manual. She has written on topics ranging from Microsoft Office to network security. Her first novel, a mystery, will be published in 2009. She is also an editor, corporate trainer, and award-winning educator who taught writing to college students for more than a dozen years.