He was co-founder and chairman of Casaleggio Associati srl, an internet and publishing company that advises on network strategies, and editor of Beppe Grillo's blog. He was also co-founder, with Beppe Grillo, of the Five Star Movement, of which he was sometimes called "guru". In the Italian context, Casaleggio promoted the Web as a medium for political communication.
Casaleggio began his career working at Olivetti S.p.A, then, in the late 1990s, became CEO at Webegg SpA, an internet consulting company. Webegg suffered heavy losses (over €20 million) in the period 2002–2003, and Casaleggio was replaced as CEO of Webegg in 2003 by Giuseppe Longo, appointed to lead the company turnaround. In 2004, he founded Casaleggio Associates, an internet consulting company that carries out research on e-commerce in Italy and whose finding are presented at a conference held in Milan every spring (since 2006).
Casaleggio Associates has been since 2005 the editor of Beppe Grillo's blog as well as of some of Grillo's books. Casaleggio Associates was also editor of the web-blog of Antonio Di Pietro (until 2010), and the website of Chiarelettere, an editor, until 2013, when was dismissed following divergence over the editorial strategy.
Gianroberto Casaleggio died on 12 April 2016 in Milan, at the age of 61, after a long period of illness.
- Marco Alfieri (26 May 2012). "Grillo e l'ombra di Casaleggio il guru con il mito di Re Artù". La Stampa. Retrieved 19 December 2012.
- Emiliano Liuzzi (8 September 2012). "Il guru Casaleggio esce dall'ombra: "Non decido io"". il Fatto Quotidiano. Retrieved 20 December 2012.
- Natale, Simone; Ballatore, Andrea (2014-01-01). "The web will kill them all: new media, digital utopia, and political struggle in the Italian 5-Star Movement". Media, Culture & Society. 36 (1): 105–121. doi:10.1177/0163443713511902. ISSN 0163-4437.
- "Telecom Italia hands over Webegg control". MF Milano Finanza. 6 April 2004.
- Ettore Colombo (3 November 2012). "Grillo-Di Pietro, il piano per le elezioni"Ingroia candidato premier"". Il Messaggero. Retrieved 5 November 2012.
- Francesco Oggiano (8 July 2013). "Il guru dimezzato". Vanity Fair. Retrieved 8 July 2013.
- Paolo Bracalini (12 November 2012). "Quando Travaglio & C. mandarono a quel paese il guru a cinque stelle". il Giornale. Retrieved 19 December 2012.
- Five Star Movement
- Personal website
- John Hooper, Italy's web guru tastes power as new political movement goes viral, The Guardian, 3 January 2013
- Peter Popham, Italy's web politicians post their dystopic vision, The Independent, 7 April 2013
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