Yea, this is the kind of world we are living in.
I rather suspect that this sort of stuff has been going on for years. It's just that until the last 10 years or so, people covered it up rather than press charges, and put the guy in jail where he belongs.
If you want to see something, check out this link -
Net Predator (TM) Free AAI SEXUAL OFFENDER SEARCH SITE!
and see how many live in you local area. I would venture to say that unless you live in an area where your nearest neighbor is 5 miles downs the road, there are a few in your area.