CARS Checklist for Evaluating Electronic Healthcare Information Source
Trustworthy source, author identified, can be contacted, known or respected authority, author's credentials, evidence of quality control, organizational support
Current, date of update/revision, factual, detailed, exact, comprehensive, audience and purpose reflect intentions of completeness and accuracy
Fair, balanced objective, reasoned, no conflict of interest, absence of fallacies or slanted tone.
Listed sources, contact information, available corroboration, claims supported, documentation supplied. A source you can triangulate (find at least two other sources that support it).