In Xenia, Ohio, the police have assigned a detective to go to teen chat rooms and pose as a 14 year old girl looking for a good time. As a result, they have arrested about one man a month, over the past three years, who come to Xenia to have sex with a girl.
You might want to pass this on to your local police department. If all cities did this, it would cut down internet sex crimes.
Also, in Ohio, you can go on the internet and find out the address of sex offenders who are out of jail. My wife looked this up and found out that there was a sex offender that lived three blocks from my grand daughter's house. Of course, my wife alerted my daughter of the nearby danger. I don't know if all states have his provision. I hope they do.