Evaluation

If you are new to the issues of searching and researching on the Internet, a good place to start is Jimmy Ghaphery's page on Evaluating Your Sources.  Be sure to understand Distinguishing Scholarly Journals from Other Periodicals.

What are the various criteria by which sources must be evaluated?

What questions must a professional writer ask about the value or worth of the information from a source as well as the reputation of the source itself?   What are the issues?