Sexting and sexy snaps on social networks

I haven't been able to move this week for news about 'sexting'. I must confess that I was only vaguely familiar with the term, thinking it had been made up by a journalist for publicity purposes and wasn't a real problem. How wrong I was. Now I read that teenagers in the US and Australia have killed themselves when their boyfriends/girlfriends have emailed/MMSed 'compromising' pictures to school mates/parents, usually after they've split up. But in a worrying twist it now seems that so-called compromising pictures posted on social networks are being used as evidence in court to mitigate in cases of sex crime.