PositiveNPR... a vibrant play-by-play ... rich with details ... One of the great insights in No Filter is just how much those choices hinged on the personal (and very Silicon Valley) tastes of Instagram\'s leaders ... Frier is sharp in showing how even the features Systrom and Krieger chose not to build—like the ability to hyperlink or a re-gram button—can be traced to their own consequences ... The irresistible drama of No Filter plays out between the founders and Facebook CEO Mark Zuckerberg ... Frier\'s most original reporting chronicles Zuckerberg\'s intense jealousy of Instagram\'s rapid growth ... It\'s stunning (and silly) to learn how Zuckerberg siphoned resources and independence away from the founders ... Frier is willing to find the cracks in Instagram\'s glossy appearance ... She nods to the founders\' indifference to the way their app would give people \'permission to present their reality as more beautiful than it actually was.\' Though No Filter would be stronger with greater insight into the costs of that indifference.