Currency - When was it published? For websites, when was the last revision? Does your topic require the most current information?
Relevancy - How well does it relate to your topic? Who is the intended audience? Does this satisfy your information need?
Authority - Who is the author? What are the author's credentials or affiliations? Are they qualified to write on this topic?
Accuracy - Where does the information come from? Is the information supported by evidence? Does the author cite their sources?
Purpose - Is the purpose to inform, sell, entertain or persuade the reader? Is the information fact, opinion or propaganda? Can you identify any bias?