This volume is an entertaining, multi-faceted exploration of what Facebook means for us and for our relationships. Facebook is a social networking service and website that launched in 2004. Users may create a personal profile, add other users as friends, and exchange messages, including automatic notifications when they update their profile. Additionally, users may join common interest user groups, organized by workplace, school or college, or other characteristics. With discussions ranging from the nature of friendship and its relationship to "friending," to the (debatable) efficacy of "online activism," this book is a systematic attempt to understand Facebook, also offering perspectives on Twitter and Web 2.0.