The British Government-backed Internet Watch Foundation blacklisted Wikipedia over an article on the 1976 album Virgin Killer by German heavy metal band Scorpions.  The problem arose with a screen shot of the album cover was published featuring a naked, young girl with her genitals obscured by a simulated tear in the photograph.

After hearing of the blacklisting, Britain's six main internet service providers blocked their users from accessing the article. As a result, Wikipedia, which contains 2.6 million articles all written by its users, has instituted a blanket ban on anonymous edits from the six ISPs, which account for 95 per cent of British residential internet users.

Wikipedia administrators have refused to remove the album cover on the site, saying they do not censor articles.  The irony of the story is that the banning of the image has only made it visible to more people as news sites publicise the issue and the image spreads across sites other than Wikipedia.