How Public Should Public Information Be?

There are hundreds of public information vendors on the web, what do they sell and why would anyone want to buy it?
First of all lets define public information: Public information is anything that is published for or to the general public or information about a public person. This pretty much covers anything or anyone who resides in the U.S. .
So what would we want to find in public records? Well we could find out if there was a registered sex offender in our neighborhood or if we wanted to see who was watching or even teaching our kids. Employers use public records to find out who they are hiring. These are some good pointsaboutpublic information so what about the bad points? Well we could look up a phone number then we could get a reverse search on it to get the owners name and then we could also their home address then we could obtain a credit check , then we could steal their identity. No most people would not do this however it is possible to acheive all of this through public information. Now we could learn to do this and take 2 to 8 hours getting all of this information for free but most people would check the internet and find a vendor who could get this information for us for only $10.00 to $30.00 most venders will send you the profile information within 24 hours. I have found four very reliable vendors on the net and they are : People finders USA, Net Detective,Intelious search and People finders.8m.com.
If you should use the net to retrieve public documents be responsible and respect the privacy of others.