This book explores how Esperanto – often regarded as a future-oriented utopian project that ended up confined to the past – persists in the present. Constructed in the late nineteenth century to promote global linguistic understanding, this language was historically linked to anarchism, communism and pacifism. Yet, what political relevance does Esperanto retain in the present? What impacts have emerging communication technologies had on the dynamics of this speech community? Unpacking how Esperanto speakers are everywhere, but concentrated nowhere, the author argues that digital media...