In part because they're not hidden on the dark web, they are openly advertised, easy to use, and as Francesca Mani found out there isn't much that's been done to stop them. Anderson Cooper ...

(Clockwise From Top L-R) Sam McCarthy, Jayden Bartels, Elijah Cooper, Galilea La Salvia and Francesca Noel Courtesy/Dana Patrick/Courtesy/Laura Mileika/Charles W. Murphy EXCLUSIVE: Following the ...

It's an almost impossible task, and one that fell to one of the gallery's curators, Dr Francesca Whitlum-Cooper, who led the team that whittled down the almost countless options to the final 12.