Which e-commerce innovation first allowed real-time language learning marketplaces where tutors could be instantly matched with students based on linguistic specialization?

The language learning and linguistics market has transformed dramatically with e-commerce. Companies have pioneered innovative approaches to language acquisition, translation services, and linguistic tools. This poll tests your knowledge about a significant market trend that revolutionized how language products are sold and consumed online.

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Duolingo's Gamified Learning Platform (2011)
iTalki's Tutor Marketplace (2007)
Rosetta Stone's Digital Download Portal (2004)
Babbel's Subscription-Based Model (2008)