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Contextual Targeting Works as Well as Third Party Data: Roast Study

If there’s any universally accepted truth among data-driven marketers, it’s that ad placements based on individual data are more effective than placements based on context (i.e., the publication where an ad appears). This study from online ad agency Roast and ad platform Teads challenges that assumption, finding contextual targeting works equally as well as targeting on typical third party segments such as lifestyle, demographics, and interests. Many caveats apply: they measured click-through rate, not conversions; they tested a B2B ad (for a study about voice search advertising); and they tested broad data categories, not specific information about individuals. But interesting nevertheless.

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ChatGPT Previews Daily News Updates

September 29, 2025

ChatGPT is hoping to grab another slice of your attention with Pulse, a now-in-limited-preview feature that will proactively deliver daily updates on information it thinks you’ll find useful. The new service is positioned as a personal assistant that will select contents “based on your chats, feedback, and connected apps like your calendar.” Forget about privacy; the real question is whether this becomes a news source that gives ChatGPT the ability to shape your opinions.

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