Which invention led to the creation of the first consumer product review website, changing how customers evaluate purchases?

Throughout history, certain inventions and discoveries have fundamentally altered how consumers interact with products. From transforming shopping habits to creating entirely new markets, these innovations have had lasting impacts on consumer behavior patterns. Test your knowledge of how certain discoveries revolutionized the consumer landscape and created new purchasing paradigms!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

ARPANET (1969), which evolved into the internet, enabling the creation of Epinions.com in 1999
The telephone switchboard (1877), which allowed the first call-in consumer feedback system
UPC barcodes (1974), which tracked the first automated product popularity metrics
Digital cameras (1975), which first allowed consumers to share product photos online