www.who?
Precisely who is the author? - a requirement for citation!
Can you contact them?
Who is hosting this material?
Do you think it might disappear next week?
www.why?
Why was this web page written?
What are the biases and agendas of the authors?
Who is the intended audience?
www.when?
When was this material last updated? - another requirement for citation
When did you visit the site? - another requirement for citation
www.what?
Is this original material or could it have been altered?
Has anyone else verified the accuracy, completeness?
Do the links in this site suggest anything about quality of information?
An example from Environmental Studies 61 (1998)