Which linguistic analysis technique has most revolutionized product reviews analysis in e-commerce over the past 5 years?

In today's global marketplace, language plays a critical role in product marketing strategies. Companies invest significantly in linguistic research to optimize their brand messaging across different demographics and markets. This poll explores how language analytics has transformed retail product marketing in recent years, testing your knowledge of this fascinating intersection between linguistics and consumer behavior.

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Sentiment analysis with contextual polarity detection
Basic keyword frequency counting
Manual content tagging by human reviewers
Simple star-rating aggregation systems