'Never send nudes, and keep swearing tame': a WhatsApp survival guide

One false move, and you could be swamped by the conversation from hell. Dos and don’ts for the eight groups you’re probably avoiding right nowIt’s funny how quickly apps have become shorthand for everyday tasks: we now go on “Tinder dates”, a takeaway is “a Deliveroo”, taxis give way to “getting an Uber”. And when it comes to sharing confidences and keeping in touch, we’re all WhatsApping. The preposterously named app, which sounds like