Since its launch in October 2010, more than 40 billion photos have been shared on Instagram and it now has more than 600 million users. The adage that a picture is worth a thousand words is perhaps why it’s a social media wunderkind – 95 million photos and videos are shared on the app each day. Anyone with a smartphone now always carries a camera with them – and Instagram allows them to visually document their lives from the palm of their hand.