Facebook has shut an unknown number of groups university students were using to mark their sexual partners out of 10.
The social media website says the 'Rate Your Shag' pages constituted harassment and those that had been reported were swiftly removed.
Group structure
Unofficially linked to scores of British universities, the groups were "liked" by thousands of students within days of being created.
Members of the group were asked to privately contact the administrator with the name of an individual, describe that person's sexual performance and then rate them.
Those details were then posted anonymously, with the subject unaware that their private sex life was being publicly discussed.
British institutions affected
Facebook could not say how many groups were removed, but Newcastle, Warwick, Nottingham Trent and Loughborough were among those that have been deleted.
The pages first appeared over the weekend and quickly attracted criticism from student bodies and university officials.
One institution, Loughborough University, threatened "disciplinary action" against any student who posted information on the page while the President of the National Union of Students, Liam Burns, said that the groups were "tantamount to bullying".
