How many false alarms would it take to distract the department from finding a lost child?

Let me put it this way: Let's say it take 500 hours to find a child without someone calling in and 5 hours to investigate a claim.

If the website method has a success rate of 1% or less the time needed to investigate the claims outweighs the time it would take to find the child without the 404 pages at all.

I don't have any numbers for this but surely that is one scenario where this could cause more harm than good.