How to find old via Facebook
You can find old friends through Facebook. Facebook lets you search for old friends. Once you have set up your account with Facebook, you can search for your friends by their names.
How to search for old friend via Twitter
You can also find old friends by using Twitter. It is much like Facebook. You can set up a free account with Twitter and start searching for old friends today. You can use reunionelite.com to find your old friends.
They let you search for old high school classmates. You can also use myoldmate.net to find your old friends. I would use Facebook first and then try to use the other websites. It seems that everyone has a Facebook these days, so you should have no problem finding your old friends.