The The Mail on Sunday discovered that Lady Shelley Sawers posted numerous personal details of her family life on Facebook including the location of the family’s London flat, pictures of them on holiday, the names & locations of their three adult children and pictures of famous friends.  Once the newspaper contacted the Foreign Office with the information, all traces of the personal pictures and identifying information was removed from the site, but the damage may have already been done.  Not only had Lady Sawers posted this potentially damaging information, she had left it open to be viewed by any member of the London network on the site.  Seeing as you don’t have to provide any proof of your connection to the city of London to belong to the group, this information could have been viewed by any of the over 200 million members of the social network.