The Guardian has seen more than 100 internal training manuals, spreadsheets and flowcharts that give unprecedented insight into the blueprints Facebook has used to moderate issues such as violence, hate speech, terrorism, pornography, racism and self-harm.
There are even guidelines on match-fixing and cannibalism.
The Facebook Files give the first view of the codes and rules formulated by the site, which is under huge political pressure in Europe and the US.
They illustrate difficulties faced by executives scrabbling to react to new challenges such as “revenge porn” – and the challenges for moderators, who say they are overwhelmed by the volume of work, which means they often have “just 10 seconds” to make a decision.
“Facebook cannot keep control of its content,” said one source. “It has grown too big, too quickly.”
Many moderators are said to have concerns about the inconsistency and peculiar nature of some of the policies. Those on sexual content, for example, are said to be the most complex and confusing.
Revealed: Facebook's internal rulebook on sex, terrorism and violence | News | The Guardian