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

John Tropea - Delicious Social Network

For example, a study in this months Scientific American Mind finds that social support and social networking offer benefits, from additional resilience to greater life satisfaction to reducing the risk of health problems. For example, when a friend starts exercising more, "I change my mind about how much I should be exercising or I share stories with my other friends who are influenced to do the same.