The days of simple, single-use apps may be over. Or not, depending on the user, his or her context and a whole lot of other factors. But there is a bit of a trend among messaging apps. Not all apps – particularly the No. 1 messaging app, Facebook's WhatsApp with 600+ million users – are part of it, though, so where you are in the world has been a driver of this trend so far. The trend, … [Read more...] about The universe in an app: Will youth create a trend within the trend?