Cookie Central - A site explaining the theory and practice behind Internet cookies, which are small programs some sites send to visiting computers to track usage. Find out how cookies are used, how they relate to privacy on the Web, and, if you want to, how to get rid of them.
eGroups - service allows you to set up mailing lists with no strings other than the inevitable ads. It also provides a searchable and browsable archive of more than 80,000 mailing lists, including the most recent year's archive of many lists from other sites. Refdesk uses this service here.
Who Is - InterNIC - The InterNIC's Whois service provides a way of finding e-mail addresses, postal addresses and telephone
numbers of those who have registered "objects" with the InterNIC. Using Whois, you can also determine
whether the domain name you desire is already in use; you can learn who administers a particular site; and you can view a list of a site's name servers.
Windweaver - search resources, guides, reviews etc.