angus crawford has the story. >> i'm not real.omputer model. >> reporter: posing as prey to catch a predator, but sweetie never actually existed. the abuse she exposed, though, is all too real. thousands of men contacted her in chat rooms, asking her to perform sex acts in front of a web cam for money. now, though, one of those men has been brought to justice. thanks to sweetie, and the team of researchers at the charity, today in brisbane in australia, scott robert hanson pleaded guilty to sending obscene pictures via the internet and possession of images of child abuse. >> it was used by the australian police as a basis to carry out their own investigation and that's exactly what we set out to do. use the information, carry out your own investigations, find out what these people are doing, find out what is on their computers. >> men think she's sitting in front of a web cam in the philippines. >> reporter: one conviction today, but a total of a thousand men were identified, including 110 in the uk. sweetie's job may be done, but