Which linguistic analysis technology first allowed digital marketers to effectively target content based on a user's writing style and vocabulary preferences?

Digital marketing in the language and linguistics industry has undergone significant transformation as communication platforms evolve. From the early days of simple text advertisements to today's sophisticated neuromarketing techniques that leverage linguistic psychology, marketers have had to adapt their language strategies continuously. This poll tests your knowledge about a pivotal linguistic innovation that revolutionized how language professionals target audiences online.

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Natural Language Processing (NLP) with semantic analysis algorithms in 2008
Automated Grammar Correction (AGC) systems in 2011
Sentiment Analysis Frameworks (SAF) in 2006
Linguistic Pattern Recognition (LPR) in 2013