With the advances of mobile broadband platforms (from 2G to 3G and very shortly to 4G), and the arrival of iphone and other powerful mobile devices, consumers are now better equipped to access faster networks anywhere and anytime. The always-connected consumers have plenty of choices in terms of what to do when they are on the go; say, on a train with free Wi-Fi access. Among the choices, talking to someone takes a much lower priority. Instead people often prefer to update their Facebook page, tweet on Twitter, read others’ updates or surf the web.