Decide on the relevance of the information

Once the author or organization has been identified you may need to do more investigating.

Look for on the WWW Example
Credentials of the author or organization on the web site. If the credentials of the author are not

easily found on the web site and an email address is provided contact the author and ask for credentials.

Do a search on the author or organization in your favourite search engine. Google or Yahoo search with quotes (“Jane Doe”) and without (Jane Doe) and see what other sites are attributed to the author or organization.
Do a search of the web site using the Internet Archive’s WayBackMachine. Go to http://www.archive.org/ Put the url in search and see archived pages of the web site.
Do a back link search on the url to identify the web sites that link to a particular URL. In Google I would place the words “link:” and then the URL to see web sites that link to the web site I am examining and what they say.
Do a whois search of the domain name for domain registry information. Go to http://www.dnsstuff.com/ and put the URL in the “WHOIS Lookup.”