Facebook Inc., won European Union antitrust approval to buy messaging service WhatsApp Inc. for about $19 billion, its biggest acquisition to date.
What is whatsapp, from their homepage this information is the basis for their app, it is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.
In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages.