THE HEADLINE SHOULD READ FACEBOOK MADE JUST $10.2 MILLION IN REVENUE. WHEN YOU CAN DO NO WRONG, THE MARKET IS TELLING YOU TO SELL.

When Facebook Inc.’s Mark Zuckerberg agreed to pay a staggering $19 billion for WhatsApp Inc. in February 2014, his justification was simple: The messaging service was expected to reach 1 billion users and become essential for a sizable slice of the world population.

Source: WhatsApp Hits 1 Billion Users, Fulfilling Zuckerberg’s Promise