In Torrance, California....well harbor gateway.

Keeping an eye on sex offenders can be a really bad idea if it takes your eye off your child. New York's University at Albany reported for a twenty year period more than 95% of arrests for sex crimes were first-time-offenders,  not registered sex offenders.  California Sex Offender Management Board (CASOMB) reports 3.55% for a sex crime, 4.57% for any new felony, and 35.48% for a violation of parole within three years.  Ohio, in a ten-year study reported that two-thirds of sex offenders who recidiviated did so within three years. US Dept of Justice found that 93% of child sexual assaults were committed by either family (34%) or acquaintances (59%).

Adam Walsh's mother left him alone at a toy display while she went just around the corner, out of sight, for no more than five or ten minuets.  They found his severed head a few weeks later.

Carlie Brucia was walking home alone after spending the night at a friend house. A business' parking lot surveilance camera caught a man grabbing her arm and leading her away.  They found her body a few days later behind a church.

Sommer Thompson ran ahead of the group she was supposed to be walking home from school with.  He body was found in a land-fill a couple of weeks later.

Samantha Runnion was playing in her front-yard while her grandmother was inside.  They found her body along a rural rode the next day.

What these and too many other tragedies have in common is that the men who commited these crime had never been convicted of any sex crime.  You must have been convicted of a sex crime to be listed on a sex offender registry and these people weren't. 

The point is that watching registered sex offenders places your focus on a very small fraction of the threat to your children.  Watching your child covers all threats.

Jaycee Dugard, the woman recovered at age 29 after being abducted at age 11?  Her step-father saw the grey sedan make a u-turn at Jaycee's school bus stop, a woman get out and pull her into the car and take off.  He just wasn't close enough to get a license plate number or do anything else to stop it.

CASOMB is a great source of factual information, they've done a lot of research.  You won't find commercial sites like Family Watchdog (that offer free services and then scare you into buying their premium services) promoting their findings.  You might be interested in their report on homelessness of sex offenders.  Rather than feeling sorry for them, which no one does, it points out the hazards created by residency restrictions - homeless sex offenders are harder to keep track of, the number who disappear has more than tripled since the 2000 foot rule was enacted - and why they recommend the law be repealed or drastically modified to only cover loitering near schools, parks etc.  In another report they explain why complying with the Adam Walsh Act is an egregiously bad idea.  In essence, they explain that these laws have no positive consequences and will cost far more than the state will lose in federal funds if they don't comply.  It is estimated that implementing AWA will cost California $59 million, but California will only lose $2 million in federal funds if it doesn't.