См., например, Jason Kincaid, «Facebook Activates ‘Like’ Button; Friend Feed Tires of Sincere Flattery», TechCrunch, 9 февраля 2009, techcrunch.com/2009/02/09/facebook-activates-like-button-friendfeed-tires-of-sincere-f lattery/; M. G. Siegler, «Facebook: We’ll Serve 1 Billion Likes on the Web in Just 24 Hours», Tech-Crunch, 21 апреля 2010, techcrunch.com/2010/04/21/facebook-like-button/; Erick Schonfeld, «Zuckerberg: ‘We Are Building a Web Where the Default Is Social’», TechCrunch, 21 апреля 2010, techcrunch.com/2010/04/21/zuckerbergs-buildin-web-default-social/.
