Concrete job: a model scores “how spammy / NSFW / abusive is this tweet or this account?”

High score → a label (high-recall NSFW, high-recall spam, abusive…). Visibility Filtering reads that label.

On For You, a stranger often cannot see a high-Agatha tweet. A follower still might. That is why the same post can exist for your audience and vanish from recommendations.

Agatha does not pick the top 35. It only scores risk. Home Mixer scores engagement. VF applies the hide.

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