Which retail innovation, introduced in the 1990s, fundamentally changed how bookstores approached inventory and significantly impacted the publishing industry's business model?

The book retail landscape has transformed dramatically over the past few decades. From small independent bookshops to major chains to online giants, the way we discover and purchase literature has evolved. This poll explores a key moment in bookstore history that changed the industry's trajectory. Test your knowledge about this retail revolution that impacted both authors and readers!

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The 'returns' system that allowed bookstores to return unsold books to publishers for credit
Barnes & Noble's 'superstore' concept with coffee shops and extended browsing hours
Computerized inventory systems using ISBN tracking that enabled 'just-in-time' ordering
The subscription book club model pioneered by Book-of-the-Month Club