if (len === 0) return []; // 补充空数组边界,避免后续逻辑出错
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For content creators, this commercial evolution might create new opportunities to monetize AI visibility beyond indirect traffic benefits. If platforms begin sharing revenue with cited sources, strong AI visibility could become directly profitable. If sponsored placements become normalized, there might be ways to amplify your organic visibility through paid promotion similar to how PPC complements SEO.