'Flocking' behavior lands on social networking sites - USATODAY.com

John Tropea - Delicious Social Network

Social networking site users (as a percentage of total Internet audience): Growth of social networking sites Total unique visitors: Source: comScore Media Metrix By Sharon Jayson, USA TODAY The interconnected web of our friends, family, neighbors and acquaintances may dominate our lives more than we know. The study of 1,178 adults ages 25 to 74 is based on data collected at the Center for the Digital Future at the University of Southern California in 2002 and 2007.