Which gaming platform first introduced a player-to-player marketplace that allowed users to set their own prices for virtual items, effectively creating one of the first virtual economies?

In the evolving landscape of gaming and virtual worlds, retail innovation has dramatically transformed how players purchase, trade, and engage with digital goods. From the earliest item shops to complex blockchain-based marketplaces, the history of virtual retail contains fascinating milestones that have shaped today's digital economies. Test your knowledge about a groundbreaking retail innovation that changed how we think about ownership in gaming.

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Steam Community Market (Valve)
Second Life's LindeX Exchange
World of Warcraft's Auction House
PlayStation Home's Virtual Goods Marketplace