Whatsapp cofounders Brian Acton and Jan Koum.

“The Facebook-WhatsApp pairing had been a head-scratcher from the start. Facebook has one of the world’s biggest advertising networks; Koum and Acton hated ads. Facebook’s added value for advertisers is how much it knows about its users; WhatsApp’s founders were pro-privacy zealots who felt their vaunted encryption had been integral to their nearly unprecedented global growth.
This dissonance frustrated Zuckerberg. Facebook, Acton says, had decided to pursue two ways of making money from WhatsApp. First, by showing targeted ads in WhatsApp’s new Status feature, which Acton felt broke a social compact with its users. “Targeted advertising is what makes me unhappy,” he says. His motto at WhatsApp had been “No ads, no games, no gimmicks”—a direct contrast with a parent company that derived 98% of its revenue from advertising. Another motto had been “Take the time to get it right,” a stark contrast to “Move fast and break things.”

Source : Exclusive: WhatsApp Cofounder Brian Acton Gives The Inside Story On #DeleteFacebook And Why He Left $850 Million Behind