The online watchdog group Perverted Justice lures sexual predators by posing as minors online and inviting them to meet up in person. And Dateline NBC's wildly popular "To Catch a Predator" series has captured audiences nationwide with a mix of fear and voyeurism.
Douglas McCollam, attorney and contributing writer for Columbia Journalism Review
Chris Hansen, host of NBC Dateline series "To Catch a Predator"
Richard Rapaport, San Francisco-based freelance writer, author of "Dying and living in 'COPS' America" a critique of "To Catch a Predator."
Xavier von Erck, founder of pervertedjustice.com