About 6-in-10 Internet Users Use YouTube % of adult Web users who sever use the following
YouTube is the second-largest social networking site, behind Facebook. A 2014 Pew Research Center study of online adults found that three-quarters (77%) of internet users are on Facebook, while 63% use YouTube. Although YouTube has a smaller reach than Facebook, it is more widely used than LinkedIn (25%), Google Plus (24%) and Twitter (21%).
About 6-in-10 Internet Users Use  | YouTube  | % of adult Web users who sever use the following  | social networking sites  | Facebook  | YouTube  | Linkedin  | 25  | Google Plus  | 24  | Twitter  | 21  | Source: American Trends Panel (wave 1). Survey conducted  | March 19-April 29 2014 Q16. Based on Web respondents.  | PEW RESEARCH CENTER 