Check out who's actually using WhatsApp.
The Top 3 Social Messaging Apps Among Smartphone Users www.adweek.com Facebook paid a staggering $19 billion for WhatsApp. While it trails Facebook as a messaging app in the United States, WhatsApp dwarfs Facebook in terms of monthly active users. Below, a look at WhatsApp usership around the world and a snapshot of users' demographics. Infographic: Carlos Monteiro |