Users Polarization on Facebook and Youtube

• Alessandro Bessi,

  Affiliations IUSS, Pavia, Italy, CSSLab, IMT Lucca, Italy

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• Fabiana Zollo,

  Affiliation CSSLab, IMT Lucca, Italy

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• Michela Del Vicario,

  Affiliation CSSLab, IMT Lucca, Italy

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• Michelangelo Puliga,

  Affiliation CSSLab, IMT Lucca, Italy

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• Antonio Scala,

  Affiliations CSSLab, IMT Lucca, Italy, ISC, CNR, Rome, Italy

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• Guido Caldarelli,

  Affiliations CSSLab, IMT Lucca, Italy, ISC, CNR, Rome, Italy

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• Brian Uzzi,

  Affiliation NICO, Northwestern University, Evanston, IL, United States of America

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• Walter Quattrociocchi

  * E-mail: walter.quattrociocchi@gmail.com

  Affiliations CSSLab, IMT Lucca, Italy, ISC, CNR, Rome, Italy

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