[5] L. Liang & D. Hale: “A stable and fast implementation of natural neighbour
Repeated searches for terms linked to suicide or self-harm over a short duration will trigger the parental alert. The feature is only available through Instagram's parental supervision tool. That is separate from, but can be combined with, a Teen Account, which is designated for youth between the ages of 13 and 17.
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self.seen_urls = set()