https://phys.org/news/2019-03-facebook-ceo-hell-privacy.html > But Zuckerberg didn't suggest any changes to Facebook's core newsfeed-and-groups-based service, or to Instagram's social network, currently one of the fastest-growing parts of the company. That didn't sit well with critics. > "He's kind of pulled together this idea that the thing that matters most to people is privacy between peers and one-to-one communication, ignoring completely the idea that people also value their privacy from Facebook," said Forrester analyst Fatemeh Khatibloo.