Teens are being charged for sending racy text messages or posting illicit photos
The charges could force the teenager from New Jersey, US, to register as a sex offender, if convicted.
Her arrest came as prosecutors across America pursue child pornography cases over kids sending naked photographs to one another by mobile phone and emails.
Social networking website MySpace would not comment on the New Jersey investigation, but the company has a team that reviews its network for inappropriate images.
(The 14-year-old) should have an intervention and counselling, because the only person she exploited was herself.
Police arrested the girl after a tip-off from America’s National Centre for Missing and Exploited Children.
Passaic County sheriff’s spokesman Bill Maer said: “We consider this case a wake-up call to parents.”
The girl posted the photos because “she wanted her boyfriend to see them,” he said.
The teen was charged with possession of child pornography and distribution of child pornography.
She was released to her mother’s custody.
If convicted of the distribution charge, she would be forced to register with the state as a sex offender under Megan’s Law, said state Attorney-General Anne Milgram.
She also could face up to 17 years in jail, though such a stiff sentence is unlikely.
Some – including the New Jersey mother behind the creation of Megan’s Law – criticised the trend of prosecuting teens who send racy text messages or post illicit photos of themselves.
Maureen Kanka’s daughter Megan became the law’s namesake after the seven-year-old was raped and killed in 1994 by a twice-convicted sex offender.
She said: “(The 14-year-old) should have an intervention and counselling, because the only person she exploited was herself.”