Which e-commerce innovation first allowed customers to directly purchase on-demand translation services from freelance linguists with delivery times measured in hours rather than days?

The language industry has undergone significant transformation with the rise of e-commerce platforms specifically designed for language products and services. From translation marketplaces to language learning subscriptions, these platforms have revolutionized how linguistic services are bought and sold. This poll tests your knowledge about a groundbreaking development in language e-commerce that changed how customers access professional linguistic services.

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ProZ.com's job board system (1999)
Gengo's web-based translation platform (2008)
Duolingo's translation marketplace (2011)
Babbel's professional translation service (2015)