Robert Harris' CARS checklist for website evaluation:
Goal: an authoritative source, a source that supplies some good evidence that allows you to trust it.
Goal: a source that is correct today (not yesterday), a source that gives the whole truth.
Goal: a source that engages the subject thoughtfully and reasonably, concerned with the truth.
Goal: a source that provides convincing evidence for the claims made, a source you can triangulate (find at least two other sources that support it).
This guide was created by Christine Shin.