Most people are probably unaware if their images have been borrowed and used by others to create online identities or profiles, but there are others that have been humiliated or physically harmed.
According to a News10 article, 'online impersonators have sent Twitter messages "signed" by celebrities, pretended to be someone else to send obscene e-mails, even subjected others to unwanted sexual advances by assuming their identity to post invitations on adult sites. In one example, a woman angry about her ex-husband's girlfriend pretended to be the girlfriend's daughter on an adult dating site, causing the daughter to receive lewd responses'.
California is now updating its impersonation laws making it a misdemeanor to assume someone else's identity to harm, intimidate, threaten or defraud. The new law takes effect on January 1, 2011.