This document discusses the history and impact of social networks. It notes that MySpace was created in 2003, followed by Facebook in 2004 and Twitter in 2006. Facebook became the most popular social network, reaching 1 billion monthly users in 2012. The document also discusses how social networks can negatively impact communication skills, consume excessive time, and potentially lead to misunderstandings. A survey found that over half of students spent 2-3 hours per day on social media. The document concludes by noting resources used.