I am not able to respond to requests for individualized help. However, my colleagues Anne Collier and Larry Magid, authors of MySpace UnRaveled, have established a great online site, called BlogSafety where parents can interact with others to discuss issues related to children and teens online.
Report serious online concerns to your local police and/or a national hotline in your country.
INHOPE Internet Hotline Providers is an excellent international organization that provides links to Internet hotlines in many countries as well as information on many serious Internet concerns including child pornography, chat rooms and abduction, pedophile rings, hate sites, and grooming.