Ballet dancers also flagged up as explicit content under blogging website’s new rules

This article is more than 1 year old

This article is more than 1 year old

Ballet dancers, superheroes and a picture of Christ have all fallen foul of Tumblr’s new pornography ban, after the images were flagged up as explicit content by the blogging site’s artificial intelligence (AI) tools.

The company, which is owned by the US media conglomerate Verizon, said on Monday it would ban pornography from its site – and defined the term as covering any depiction of “real-life human genitals”, or “female-presenting nipples”.

Once the ban comes into effect on 17 December, any post containing such imagery will be deleted. But in order to moderate billions of posts in such a short timeframe, Tumblr has turned to AI tools that appear unable to distinguish clothed from naked figures, let alone tell whether a nipple is presenting as female.

The actor and Tumblr user Wil Wheaton posted one example: an image search for “beautiful men kissing”, which was flagged as explicit “within 30 seconds of me posting it”.

“These images are not explicit,” Wheaton wrote. “These pictures show two adults, engaging in consensual kissing. That’s it. It isn’t violent, it isn’t pornographic. It’s literally just two adult humans sharing a kiss.”

Other users chronicled flagged posts, including historical images of (clothed) women of colour, a photoset of the actor Sebastian Stan wearing a selection of suits with no socks on, an oil painting of Christ wearing a loincloth, a still of ballet dancers and a drawing of Wonder Woman carrying fellow superhero Harley Quinn. None of the images violate Tumblr’s stated policy.

As he announced the new rules, Tumblr’s chief executive, Jeff D’Onofrio, acknowledged the company would make errors. “Filtering this type of content versus say, a political protest with nudity or the statue of David, is not simple at scale.

“We’re relying on automated tools to identify adult content and humans to help train and keep our systems in check. We know there will be mistakes, but we’ve done our best to create and enforce a policy that acknowledges the breadth of expression we see in the community.”

The site insisted it would still allow non-sexualised images of women’s nipples, in situations such as breastfeeding or works of art, and said “artistic, educational, newsworthy, or political content featuring nudity are fine”.

Tumblr's adult content ban dismays some users: 'It was a safe space' Read more

But many users expressed dismay over the bans, arguing that Tumblr’s position as one of the last major sites on the internet where adult content could mix freely with more traditional social networking made it a valuable space for people to safely express their sexual identities.

“It was a great place to mix art and adult content,” one user, Nyx Serafino, said on Monday. “I could put out my perspective on things, post a song, and feel comfortable in my own skin. It took a long time for that to happen for me.”

Tumblr’s stricter rules appear to have been prompted by the app’s temporary removal from Apple’s App Store in November. This followed the discovery of child abuse imagery shared to the site.