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Meta terminology

TS

Time Spent

Core Meta engagement metric measuring the aggregate time people spend on a platform. Reported either as a total — "total teen time spent" was set as an overall company goal — or normalized per active user as TS/DAP, which internal decks treat as the standard measure of "engagement."

Sources

Internal documentUnsealed internal messages ("Re: Teens and News Feed Alignment")

Internal documentUnsealed internal messages ("FYI: Teen Growth!!")