Are fucking retarded.
They operate solely on the fact that a potential creepy fuck will try and do something to do, while being entirely honest about his identity.
Bitch, if I was trying to get to you to kidnap you, do you think I'd tell you the right fucking name for you to run a check on?
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"No one goes near my growing family -- without a background check."
Well, honey, you're gonna bee eyeball deep in paranoia your entire life and will quite probably snap under the stress. Then again, if beenverified appealed to you in the first place, you were probably already farrrrr too protective of that little bundle of joy to begin with.
May as well get him a child harness now because that boy'll never be out of your sight or away from your side in his life, what with all the potentially disgusting pedophiles, kidnappers, rapists, drug dealers and general undesirables you find crawling around your home....
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Addendum: Now i understand that a person may be an ex-con, working in a legitimate job. Do you think they'll trust anyone with a dangerous past (Thievery, assault, murder, drug use) with a job that's essentially a free pass into someone's home? Really? just...No.
/rant