Which marketing innovation did Bloomsbury Publishing introduce for the release of "Harry Potter and the Half-Blood Prince" that broke publishing industry records and is now a standard practice?

The publishing industry has undergone massive transformations in how books are marketed and branded. This poll explores one of the most influential marketing campaigns that revolutionized how we discover and purchase literature, creating a phenomenon that transcended traditional book promotion and became a cultural touchpoint. Test your knowledge about the strategic branding decisions that transformed an already successful book series into a global phenomenon.

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The midnight book release party, which created unprecedented anticipation and turned book launches into cultural events
Separate adult and children's cover designs for the same book, targeting multiple demographic markets simultaneously
The first major publisher-sponsored online fan fiction platform to maintain engagement between releases
Color-coded book spines designed to create visually appealing "rainbow" collections that encouraged complete series ownership