Have you ever heard of WhatsApp? Chances are, you have, but perhaps not in the context of a social network. mhpc.org argues that WhatsApp, a popular multi-platform texting and communication application, is the largest social network you have never heard of.
It’s an interesting idea: that WhatsApp has, intentionally or not, created a mobile social network that is large enough to be named alongside the likes of Twitter, Facebook, and Google+ – but is that how most people think of this application and service? How do you use WhatsApp?