With the diffusion of social network sites (SNS) such as Facebook and MySpace, social media have become one of the most popular Internet services in the world. As of 2011, Alexa, a company that tracks web traffic, ranked these sites as two of the most visited sites in the world, where Facebook is only second to Google both in world and U.S. rankings (Alexa, 2011). The growing popularity of SNS has created a new debate: Do these Internet services contribute to society by allowing people to become informed, find common causes and participate in public life more often (e.g., Bennett, 2008), or do they foster shallower relationships, distract people from public affairs and deepen their political and civic disengagement (e.g., Hodgkinson, 2008)?