To find businesses by category and location
BigBook (a yellow pages of the Internet)
http://www.bigbook.com
Switchboard (white pages)
http://www.switchboard.com
World Wide Yellow Pages
http://search1.yellow.com/cgi-bin/SearchWWYP
(that's the number 1 after search)
To find people if you know all or part of the username and address
Finger Gateway (to find the real name for a username and e-mail address)
http://www.cs.indiana.edu/800/finger/gateway
Internet Address Finder
http://www.iaf.net
Subscribers to America Online
http://www.idot.aol.com/search
To find people if you know only their real name and real address
Four11 (4 eleven--as in directory assistance)
http://www.four11.com/
Netfind http://www.nova.edu/Inter-Links/net find.html
University E-Mail Directories
gopher//merlot.gdb.org/11/phonebooks
gopher://gopher.nd.edu/11/Non-Notre%20Dame%20Information%20Sources/Phone%
WhoWhere? http://www.whowhere.com/
Yahoo People Search http://www.yahoo.com/search/people