Author
Who is the author?
How is the author qualified?
Is the author an expert?
Does the author have bias? (Remember that a bias may not be directly stated.)
If no author is listed, why?
Host
Who hosts the site?
What is their purpose?
Does the host have bias? (Remember that a bias may not be directly stated.)
What is the domain extension? This can help you determine how reputable a website is. For example, .gov is the domain for United States government sites and .edu is for US Educational institutuions.
Sources
Does the site provide its sources?
Does it refer/link you to other credible sources?
Is the information able to be cross-referenced?
Currency
Is the site regularly updated?