Book excerpt: Written by a veteran litigator and leading expert on law and social media, The Lawyers Guide to Social Networking provides a comprehensive look at how social media is affecting the legal system. This book examines the myriad ways in which information from sites like Facebook, MySpace, and Twitter is being put to use in everything from criminal and family law matters to personal injury, employment, and commercial cases nationwide. The author illustrates how the pervasive social networking phenomenon is redefining traditional notions of jurisdiction, duty, service of process, and legal ethics while using actual trial and appellate level cases to analyze the discoverability and admissibility of social media evidence.