New Political Communication Unit researcher Cristian Vaccari has two book chapters out, coauthored with Lorenzo Mosca (Scuola Normale Superiore) and Augusto Valeriani (University of Bologna) examining the role and use of digital media by Italy's Five Star Movement, a new political party that took Italian politics by storm by coming second in both the 2013 general elections and the 2014 European Parliament elections.

The first contribution is part of a book edited by Filippo Tronconi (University of Bologna) and titled Beppe Grillo's Five Star Movement: Organisation, Communication and Ideology, published by Ashgate. The chapter by Mosca, Vaccari and Valeriani examines the role of digital media for the Five Star Movement as a tool for organization, communication, and identity-building.

The second chapter is part of a book edited by Andrea De Petris (LUISS University) and Thomas Poguntke (University of Dusseldorf) and titled Anti-Party Parties in Germany and Italy: Protest Movements and Parliamentary Democracy, published by LUISS University Press. The chpater coauthored by Mosca, Vaccari and Valeriani focuses in particular on the first-in-their-kind online primaires that the Five Star Movement organized to select its candidates for the 2013 parliamentary elections.