The thing is, he is more correct on another issue. The 404 page will help but the REAL issue is location-based reporting.
The real problem why I can't find missing kids is because I don't know which ones are missing in my area. The down side is that I won't get to see kids missing in CA while I am in NY and the CA kid was taken to NY.
The idea is: we need a service where given a person's location we can generate the right set of missing children (those who are from the area, or might have gone to the area).
After that we just need to put this information everywhere where important information is not displayed (free areas) like 404 pages, or anything or "please wait while we process xyz data, o and look at these missing children vs this progress bar"