The social site Reddit was recently criticised over sections in which users shared, among other things, distasteful pictures. However, its CEO Yishan Wong has told the site's moderators legal content should not be removed, even if "we find it odious or if we personally condemn it".

The web site Gawker revealed the real identity of the troll called Violentacrez, which posted a big part of Reddit's content. He created sub-sections such as "jailbait", a term give...