He must weigh whether to push forward with a controversial app redesign that could either reinvigorate Snapchat's growth or drive users, including Kylie Jenner, into the arms of rival Instagram. The reality TV star and influential Snapchat user tweeted this week that she no longer uses the app. The Snapchat backlash could prove to be an equally defining moment for Spiegel and Snapchat. Facebook users may dislike certain features, but there's no other service that provides as comprehensive a directory of people — and their birthdays. At first, Spiegel sounded characteristically unfazed by the user backlash, noting that some complaints actually "validate" his thinking with the redesign.

Source: CNN February 23, 2018 21:00 UTC