Grégory Kapustin est journaliste et animateur radio.
Il publie une première tribune dans Libération à propos des potentialités du monde virtuel en ligne "Second life". Il signe son galop d’essai avec un chapitre dans l’ouvrage collectif Second life, Un monde possible (Petits Matins, 2007). Cet écrit rencontre un fort succès avec 1 500 exemplaires vendus.
Suite à une seconde tribune publiée dans Le Monde en 2008, il rédige La jeunesse qui range sa chambre, une génération et ses révoltes (édition du Cygne, 2008). Plutôt envisagé comme un "coup de gueule", cet ouvrage appelle à la réunion des forces de lutte de la génération de jeunes français.
Après un passage dans l'humanitaire, Gregory Kapustin crée l'agence de communication Internet & Concret qu'il dirige aujourd'hui.
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