Thus, according to the ECtHR, a news website should anticipate types of stories that might attract defamatory or insulting comments and be prepared to remove them promptly – or even before the comment has been reported, which might mean websites will be forced to pre-moderate any comment it publishes. One only has to look at the type and volume of comment posted below the line on websites from the FT’s to the Daily Mail’s to see the implications of this ruling. And, as any moderator will tell you, controversial comments can appear in the unlikeliest of places.

via The threat facing online comments – FT.com.