evidence: Viral posts about a missing 15-year-old Texan called "Gracie Mae Thompson" have been flagged as a potential scam by internet sleuths. [...] "#LakeWorth Her name is: Graci Mae Thompson. Age:15 Height: 5'2 Weight: 103 Hair color: Originally strawberry blonde but recently dyed black She was last seen in black shorts and a black shirt." [...] Last year the U.K. fact-checking charity Full Fact said that Facebook groups had become "overwhelmed" with fake posts about missing children. Like the posts about Thompson, these fake alerts had been seen on second-hand marketplace community groups.