lucy24 - 12:59 am on Jan 16, 2014 (gmt 0)
According to iStrategy, Facebook has 4,292,080 fewer high-school aged users and 6,948,848 college-aged users than it did in 2011.
Does that mean it's losing existing users or only failing to acquire new ones in the specified age brackets?
Someone who was a high-school-aged user in 2009/2010 is by definition no longer a high-school-aged user. They may or may not be a user at all.