What's Up With Facebook's Big Acquisition?

Facebook paid $19 billion for the instant messaging service WhatsApp even though it's never disclosed whether it's profitable. Aarti Shahani of KQED explains what Facebook sees in its new acquisition.

Source: http://www.npr.org/2014/02/20/280255209/whats-up-with-facebooks-puzzling-acquisition?ft=1&f=1019

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