Over-the-top players like WhatsApp, Facebook and Skype will cost mobile operators an estimated $14 billion in lost revenues this year. And it will be 26% more from 2013, according to a study of Juniper Research. It has detected that in a number of markets the mobile voice revenues had fallen bellow 60% of their value five years’ ago. The combination of IM, VoIP and social media are blamed for not only in lost revenues but adding costs due to the scale of signaling traffic. It suggests the operators to optimize their networks.