WhаtsApp Messenger is а crоss-plаtfоrm mоbile messaging app that allows you to exchange messages without having to pay for SMS. In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages. Facebook paid $19.6 billion to buy WhatsApp. Facebook paid for the deal using its own stock. The WhatsApp takeover by Facebook is an example of a