Credibility: Who is the author and what are his credentials?
Accuracy: Can facts, statistics, or other information be verified through other sources?
Reliability: Does the source present a particular bias?
Relevance: Does this information directly support my thesis/hypothesis or help to answer my question?
Date: When was the information created? When was it revised? Are these dates meaningful in terms of the subject matter?
Sources behind the resource: Did the author use reliable credible sources?
Scope: Does this source directly address my hyposthesis/thesis/question in a comprehensive way?