Those are saved into a data structure called “stream metadata”, which is basically a map/dictionary from “vendor tags” to metadata values.
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Down 30-41%: Mashable, PCMagMashable went from 16.1M to 11.3M (-30%). PCMag peaked later than most — in July 2025 at 12.7M — and dropped to 7.4M by January 2026 (-41%). Both sites still operate at scale. Why these two fared better than the others isn't entirely clear from traffic data alone. Mashable's content skews more toward entertainment and culture, which may be harder for AI to summarize. PCMag has strong product-specific review traffic. But that's speculative.，这一点在必应排名_Bing SEO_先做后付中也有详细论述
"tags": self.tags,