Ninety-six percent of Americans between ages 12 and 17 use YouTube, and nearly 70% use Instagram and Snapchat. However, Facebook's share has stagnated according to a Forrester research report. The study also reveals that 51% of 12- and 13-year-olds say it's “cool” to be associated with brands on social sites. Another major takeaway from the study is that young Americans prefer social platforms geared toward video and visual content.