Wink.com is a free people search service which lets you find people at social networks like MySpace, Bebo, LinkedIn & Top 100 Undiscovered Web Sites of 2007 by pcmagazine.
Friendster, and other online communities. Includes name search plus location, school, work, interests, and more. They are also adding more and more networks all the time and are developing new technology to find even more people in a variety of cool ways, currently listed more than 220,611,831 people .By creating a profile you will be able to link all of your web content within a single page. This site is also listed on

Update: pipl.com[The most comprehensive people search on the web] is also popular.