Most Web directory services will remove your e-mail address from their listings if you ask them to. The Web addresses of some of the main directory sites are listed below. Also check the search engines to see if you are listed on their "people search" directories.
Finally, there is a service called the Anonymizer, which acts as a kind of privacy filter, standing between you and the rest of the Internet.
Using the Anonymizer, you can visit Web sites and send messages to newsgroups without revealing your e-mail address or other personal information. You can find out about the Anonymizer at http://www.anonymizer.com/. This site includes links to a number of other sites concerned with Internet privacy.
Web Directory Services
Internet Address Finder http://www.iaf.net
Yahoo People Search http://www.yahoo.com/search/ people
Internet Privacy Organisations
Centre for Democracy and Technology
Electronic Freedom Foundation http://www.eff.org
Electronic Privacy Information Center