Source: Who or what is the source?
Motive: Why do they say so?
Authority: Who wrote the story?
Review: Read over the story carefully.
Two-source Test: Double check everything if possible.
Currency: Is the information still current? Always check the date.
Relevance: How important is the information for your needs?
Authority: Where is the information coming from?
Accuracy: Is the information reliable?
Purpose: Why does the information exist?