I noticed this awhile back when I saw this site and knew it was a fraud. You can enter any street name, city and state and keep clicking the SEARCH button and each time something different pops up. I guess they think people are real stupid, and I'm sure a ton of gullible people who do not stick with government only web sites believe it. Also see the images below the horizontal line of my test. Try it out for yourself, here.
They also have another site called "Child Trader" which is apparently fake as well.
They also have this on their FRONT page - Click to enlarge
And this as their DISCLAIMER - Click to enlarge
This is their WHOIS info - Click to enlarge
And here is my test. Notice each time the data changes? Click the images to enlarge.