The source for the 25% of users being active in a month was from the 3rd quarter earnings report for 2015. http://venturebeat.com/2015/10/29/linkedin-now-has-4

The source for the 25% of users being active in a month was from the 3rd quarter earnings report for 2015. http://venturebeat.com/2015/10/29/linkedin-now-has-400m-users-but-only-25-of-them-use-it-monthly/ http://venturebeat.com/2015/10/29/linkedin-now-has-400m-user...