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

John Tropea - Delicious Social Network

But now, largely thanks to the burgeoning popularity of online social networks like Facebook , researchers are discovering what a powerful influence our connections — both online and off — really have over our lives. Because social networks online are much more clearly defined than offline connections, they have been a boon to researchers. The findings, trickling in from early research, suggest health and psychological benefits for those who "friend" and are "friended."