
Bloomberg Photo Service 'Best of the Week': The Facebook Inc. logo for 'like' and the WhatsApp Inc. mobile-messaging application WhatsApp are displayed on Apple Inc. iPhones in this arranged photograph taken in London, U.K., on Thursday, Feb. 20, 2014. Facebook, the worldís largest social network, agreed to acquire mobile-messaging startup WhatsApp Inc. for as much as $19 billion in cash and stock, seeking to expand its reach among users on mobile devices. Photographer: Chris Ratcliffe/Bloomberg
Chris Ratcliffe/Bloomberg