Which groundbreaking invention from the 1990s revolutionized product reviews by allowing consumers to publicly share their opinions on purchases?

Before online shopping and review platforms became ubiquitous, product reviews had a fascinating evolution. The way consumers shared their experiences with products has transformed dramatically over the decades, influenced by technological innovations and changing consumer behaviors. This trivia question explores a pivotal moment in the history of product reviews that forever changed how we evaluate purchases.

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Amazon's customer review system (1995)
Consumer Reports Online database (1997)
eBay's seller feedback mechanism (1996)
Epinions.com peer review platform (1999)