Which groundbreaking e-commerce feature did Rosetta Stone first implement in 2011 that revolutionized how language learning products were sold online?

The intersection of linguistics and e-commerce has created fascinating product developments and marketing strategies. Language learning platforms, translation services, and linguistic analysis tools have all found unique ways to position themselves in the digital marketplace. This poll tests your knowledge of how language technology products have been marketed and sold online through innovative e-commerce approaches.

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

Online subscription model with cloud-based progress tracking
Augmented reality pronunciation verification system
Pay-per-word translation marketplace
Linguistic fluency certification with blockchain verification