Researchers at Birmingham City University have identified six types of killer who use Facebook to commit crimes, in the first-ever study on how the social networking site can affect criminal behaviour.Dr Elizabeth Yardley and Prof David Wilson, from the university’s centre of applied criminology, analysed cases of murder in which the site had been reported as a significant factor. They found 48 examples from across the world, including that of Wayne Forrester, an HGV driver, who killed his wife Emma in 2008 after reading her Facebook posts in which she claimed that they had separated and she wanted to meet other men.
http://www.theguardian.com/technology/2014/nov/03/killer-facebook-social-media-violent-criminologists