In a thread on Mumsnet following the incident, one user said it was “time to rethink” the volunteer moderation system following “the truly awful photos… which I will never un-see”.
“The site is big enough and money-making enough to support a better system by now,” the user added.
“There really needs to be proper 24-hour IT cover.”
Ms Roberts defended the use of volunteer moderators overnight, saying they were based overseas in different time zones “so they can easily monitor the site”.
“I don’t believe this horrible incident would have been prevented had it happened in office hours with our usual moderation team in London,” she said.
“The key is to stop this type of horrific thing being posted on our site in the first place and we’re putting all our efforts into preventing that from happening again.”