Facebook Inc said on Wednesday some content was inadvertently blocked on its social network platform when it banned all news content in Australia. After tense negotiations prompted Facebook to cut off news in the country last week, Australia offered a host of technical concessions and the social media giant said it would restore news as a revamped bill looked set to become law this week. Facebook said the news ban was related to a "fundamental misunderstanding" of the relationship between the company and news publishers.