Begin your evaluation by using this acronym:
A Authority Who wrote the site? What are their
qualifications?
B Bias What are the intentions of the author
and the publishing entity?
C Currency How old is the information? Does the
information reflect the most recent
findings?
"Domain names are used to identify one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular Web pages. For example, in the URL http://www.pcwebopedia.com/index.html, the domain name is pcwebopedia.com.
Every domain name has a suffix that indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains." - Webopedia