Currency – How up-to-date is the information? Is the date appropriate for your topic?
Relevance – Is the information directly about your topic? Is it too simple? Too complex? What audience is this written for?
Authority – Who is the author? What are his/her credentials? Why should you believe the author?
Accuracy – Where does the information come from? Are there references or a bibliography? Is the information consistent with unrelated sources? Does the appearance seem professional?
Purpose – Why was this information published? What audience is this written for? Is there a commercial or persuasive purpose?