I was a bit of a late arrival to Instagram. Nothing to do with the snobbery directed at the image sharing app over the enthusiasm of its users for displaying photos of their dinner โ€“ Iโ€™m not averse to doing that myself. I just didnโ€™t quite get it. But thereโ€™s something about those little square peepholes into peopleโ€™s everyday life that drew me in, and now Iโ€™m a convert.