Contact Myspace and Facebook and have the bad sites shut down. This is a 'terms of service' violation. Generally ID theft involves theft of another person's identification information such as SS#, date of birth and name to obtain a monetary benefit such as credit cards. This is a crime that can be reported to the authorities, and a civil violation for which one can bring a civil action against the violator for monetary damages. But, I do not see that your posting includes the 'classic' ID theft definition in the monetary sense.
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This answer is offered for informational purposes only. It is not offered as, and does not constitute, legal advice. Laws vary widely from state to state. You should rely only on the advice given to you during a personal consultation by a local attorney who is thoroughly familiar with state laws and the area of practice in which your concern lies.
Identity theft is generally defined in the criminal context as getting something of value by using someone else's identity, so it does not sound like it was a crime. This sounds like a civil matter.
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