|Source: BI Intelligence|
The rise of niche players in the Social Media landscape shows that users are trending towards using platforms that offer a stripped-down service; one or two features such as photo sharing or quick updates or messaging. Facebook is worried about declining teenage usage and it already said so in its annual 10-K. Here is the statement directly from Facebook's 10-K:
We believe that some of our users, particularly our younger users, are aware of and actively engaging with other products and services similar to, or as a substitute for, Facebook. For example, we believe that some of our users have reduced their engagement with Facebook in favor of increased engagement with other products and services such as Instagram. In the event that our users increasingly engage with other products and services, we may experience a decline in user engagement and our business could be harmed.