More helpful info from The Virtual Chase:
"Lose sight of your witness? Want to collect but can’t find the debtor? Unable to serve because of an old address? Public records such as civil lawsuits, current bankruptcies or property records may help you locate someone."
Look into the People Finder Guide to "help you find online sources of public records as well as other Web-based people finding tools." Also check out the extensive collection of Tools for Finding Public Records & online Sources of Public Records.