Something is happening quietly, and almost nobody is talking about it clearly. In the age of AI search, advertising has found a new disguise — it's showing up dressed as knowledge. When you ask Doubao, Kimi, or DeepSeek,openai "which is better?", the "objective analysis" AI delivers might be content that was deliberately engineered by a brand. This isn't a conspiracy theory. It's the result of a strategy called GEO — Generative Engine Optimization — being systematically abused. Advertising is a drink. Knowledge is clean water. The problem is that someone has started pouring drinks into clean water bottles. And when you drink it, you can't tell the difference.
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