For teenagers in Europe, WhatsApp is #1. As FB is used by their parents and grandparents, it got uncool.
But recently Snapchat is heading to get #1 as now their parents are using WhatsApp too.
The same happened with MySpace. FB is like the late MySpace, everyone is on it, mainly some late adopters still regularly post new baby & cat pics - the difference is FB might be too big to fail, and can innovate or buy new services (Instagram, WhatsApp).
But recently Snapchat is heading to get #1 as now their parents are using WhatsApp too.
The same happened with MySpace. FB is like the late MySpace, everyone is on it, mainly some late adopters still regularly post new baby & cat pics - the difference is FB might be too big to fail, and can innovate or buy new services (Instagram, WhatsApp).