Social media use by businesses hobby, rather than social media containers such as Google+, Facebook, and Twitter. PR departments face significant challenges in dealing with viral negative sentiment directed at organizations or individuals on social media platforms (dubbed "sentimentitis"), which may be a reaction to an announcement or event. In a 2011 article, Jan H. Kietzmann, Kristopher Hermkens, Ian P. McCarthy and Bruno S. Silvestre describe the honeycomb relationship as "present[ing] a framework that defines social media by using "seven functional building blocks": identity, conversations, sharing, presence, relationships, reputation, and groups". Social media marketing becomes effective through a process called "building social authority". One of
Jack Dorsey hundred employees by June 2011. Square's office is located on Market Street in San Francisco. In September 2012, "Business Insider" magazine valued Square Inc. at US$3.2 billion. Dorsey is CEO of Square, Inc. On October 14, 2015, Square filed for an IPO to be listed on the New York Stock Exchange. As of that date, Dorsey owned 24.4% of the company. Producer Tom Anderson and correspondent Lara Logan interviewed Dorsey for a segment of CBS "60 Minutes" called "The Innovator: Jack Dorsey" which aired during March 2013. In 2013, talking to CNN, Dorsey expressed admiration for Michael Bloomberg and his