The billionaire cofounder of WhatsApp, which Facebook acquired for $19 billion, just tweeted #deletefacebook March 20, 2018 by quixnet The billionaire cofounder of WhatsApp, which Facebook acquired for $19 billion, just tweeted #deletefacebookBusiness Insider The co-founder of a company Facebook bought for $19 billion just told followers to delete FacebookCNBC WhatsApp co-founder, who sold to Facebook, says #DeleteFacebookCNET Full coverage