One of the main promises of online advertising is targeting. Tracking browsing habits helped early digital advertisers slice up audiences and sell them to marketers. Search engines like Google let brands buy ads around specific requests and revealed clear user intent. Social networks like Facebook used detailed profiles and voluminous social interactions to promise ads that were both precisely targeted and displayed in the context of highly personalized feeds, making billions of dollars in the process. Generative AI throws a few more possibilities into the mix. Companies can use automated copywriting and image generation to customize ads per user or draw on chatbot interactions, which Meta is already ingesting into its advertising platform.

New AI tech also makes possible stuff like th

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