Check this out - a bloke who put nude photos of his ex-girlfried on Facebook has been sentenced to 6 months' jail (originally to be served as home detention, on appeal to the District Court the length of incarceration was confirmed but the sentence as a whole was amended to a suspended sentence). This is the first conviction of its kind in Australia and one of only a handful in the world.
In making her decision in this case (Police v Ravshan USMANOV [2011] NSWLC 40), Deputy Chief Magistrate Mottley stated at [19]:
"In relation to this matter I have regard to the purposes of sentencing, and in particular the need to prevent crime by deterring both the offender and the community generally from committing similar crimes. This is a particularly relevant consideration in a matter such as this where new age technology through Facebook gives instant access to the world. Facebook as a social networking site has limited boundaries. Incalculable damage can be done to a person's reputation by the irresponsible posting of information through that medium. With its popularity and potential for real harm, there is a genuine need to ensure the use of this medium to commit offences of this type is deterred."
Only a Local Court case so little influence but a start towards making people real-world accountable for their actions in the perceived other world of social media...