Google.com - This most widely used search engine is a great place to start your search for any person or any thing.
MySpace.com - Here you can find old friends and classmates by searching for them by name, or looking through your old high school or college groups.
FaceBook.com - FaceBook works in much the same way as MySpace, but was originally for high school and college networking. This makes it an excellent source for finding old classmates.
YouTube.com - You may think of YouTube as a place to view videos, but it also works as a social networking site that you can use for your people search. Many have a channel where they have their own videos and those they have as favorites, and you can usually find someone on here if they have an account.
Classmates.com - If you are searching for someone you went to high school or college with, this is a great site for reconnecting. You can choose your school of choice to see if your old friend has signed up, or do a search on their name.
ZoomInfo.com - When you visit this site, you will notice it is very business oriented. If you know where someone works or worked, or what industry they are involved with, this site might be most helpful in finding someone you may have worked with in the past, or may have met in college.
PeekYou.com - When you search for someone with this site, you will get results by name and location. If that person has a profile anywhere online, you may find a link there that will take you directly to that site.
Wink.com - This site is a mix of many different types of searches, but is geared towards help people connect and find each other.
Spock.com - This site allows you to search for people by many different criteria, and will give results based on schools, business, and interests.
People.Yahoo.com - Yahoo has a good people search you can use. Many use their email services, and that means they have a large database of information that you may find helpful in your search.