Market Watch: Facebook buys WhatsApp for $19 billion

Market Watch: Facebook buys WhatsApp for $19 billion »Play Video
This Wednesday, Feb. 19, 2014 photo shows the WhatsApp and Facebook app icons on an iPhone in New York. (AP Photo/Patrick Sison)

WhatsApp, the rapidly expanding mobile messaging app, suffered an outage for more than three hours on Saturday, frustrating users just days after its acquisition by Facebook for $19 billion.