Which publishing house pioneered the 'living narrative' brand storytelling technique that allows readers to influence upcoming plot developments in book series through digital participation?

In the publishing world, brand storytelling has evolved dramatically in the digital age. Major publishers and literary houses have reimagined how they position authors and their works to connect with readers on deeper levels. This poll explores how one famous publisher revolutionized their approach to brand storytelling, creating an innovative narrative technique that has since been widely adopted across the arts and literature industry.

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Penguin Random House with their 'Reader's Voice' platform
Bloomsbury Publishing through their 'Potter's Universe' interactive experience
HarperCollins with their 'StoryForge' narrative ecosystem
Simon & Schuster via their 'Narrative Nexus' program