PositiveThe Times (UK)... deeply researched and highly entertaining ... packed with anecdotes and insider accounts ... As a reader it becomes infuriating to see how many times issues of cyberbullying on the app are only sorted when a celebrity such as Ariana Grande raises the issue with Instagram management. Frier, a tech journalist at Bloomberg, gives Instagram too much of a free ride here. I could have done with a few dissenting voices showing how posts encouraging self-harm and anorexia were largely ignored for many years ... What the book does do well is show how the relationship between Instagram and Zuckerberg steadily broke down, with the Facebook boss presented as increasingly jealous and bitter about his acquired app’s success ... There have been a series of books about Silicon Valley’s giants in recent months...While Frier’s book lacks some of the drama of these, it eloquently describes how the app changed millions of lives, generating a new industry of \'Instagram influencers\' .