 According to a survey conducted by Pew Research in 2018, Facebook and YouTube dominate the social media landscape, as notable majorities of U.S. adults use each of these sites.At the same time, younger Americans (especially those ages 18 to 24) stand out for embracing a variety of platforms and using them frequently.Some 78% of 18 - 24-year-old youngsters use Snapchat, and a sizeable majority of these users (71%) visit the platform multiple times per day.