Chat Apps Bite Mobile $$

Remember when getting unlimited texts was the next big thing for mobile users? Now chat apps like WhatsApp have surpassed text messaging as the most preferred method of mobile communication, taking a huge chunk out of a major cash source for phone companies. Analysts expect messaging on apps to grow to more than 41 billion a year—double the number of texts. They also think Facebook should watch its back, as the messaging apps are seen as a potential threat to Facebook supremacy in social media.