Legal experts say the mass media effect of social networks and armchair detectives could backfire and may help defence lawyers contrive a convenient escape hatch for clients.
And while the law may not yet be able to prosecute individuals using Twitter or Facebook who comment on criminal cases, the cumulative effect of trial by social media could interfere with justice.
'It is contempt to talk about someone's innocence or guilt before it is presented in court,' David Rolph, an associate professor of law at Sydney University, told news.com.au.
'The problem for social media is an individual may have a lot of followers or be retweeted, but what happens when there's a groundswell of prejudicial material? The harm is done by the cumulative effect of people talking on social media sites rather than one individual being responsible.'