Social media has evolved significantly since its beginnings in the late 1960s and early 1970s. Some of the major milestones in the history of social media include the creation of the first email in 1971, the introduction of the World Wide Web in 1989, the launch of the first social network called Six Degrees in 1997, the founding of LinkedIn and Facebook in 2003 and 2004 respectively, the launch of YouTube and Twitter in 2005 and 2006, and social media becoming a dominant form of communication and information sharing by 2011 with approximately 84% of people age 15 and older participating.