WhatsApp, the most popular messaging app, revealed today just how big it has become. The Facebook-owned app said it has amassed two billion users, up from 1.5 billion it revealed two years ago. It also remains free of ads and does not charge its users any fee. The announcement today makes WhatsApp only the second app … Continue reading WhatsApp hits 2 billion users, up from 1.5 billion 2 years ago