The oil company Trafigura went to court to stop any UK newspaper mentioning the words "Minton Report" (http://www.wikileaks.com/wiki/Mintonreport:TrafiguraToxicdumpingalongtheIvoryCoastbrokeEUregulations,14Sep2006). They got totally pwned by Twitter (see: http://www.guardian.co.uk/media/2009/oct/13/trafigura-tweets-freedowm-of-speech)