Millions of Teens Have Abandoned Facebook since 2011
Yesterday, iStrategyLabs came out with a report that appears to prove Facebook's teenager exodus. According to iStrategy, which pulls its data from Facebook's social ad tool, the number of users aged 13-24 in the United States has declined by more than 6 million since January 2011. If the data is correct, Facebook's teenage user base in the U.S. shrank by an alarming 25 percent in the past three years, indicating that Facebook does indeed have trouble reaching young users.

Description
This chart illustrates how young Americans are apparently losing interest in facebook. Since January 2011, the number of users aged 13 to 24 has declined by more than 6 million.