There is a website that allows you to see all registered Sex Offenders in and around your neighborhood.  Just type in an address and a map will show up on your screen.  All the red squares are sex offenders.  Click on a red square and a photo of the offender will come up along with a name, etc. 

It's scary how many are out there.  I had 86 of them show up on my map.

www.familywatchdog.us