The CRAAP test is a checklist for evaluating websites. CRAAP is an acronym for:
Currency - Is the material current? Does it contain outdated or disproven information? Is the site maintained regularly?
Relevance - Is the material relevant to your question?
Author - Who wrote the content? What are the author's qualifications? Is there a way to contact the author?
Accuracy - How accurate is the information? What evidence does the author use? Does the author cite sources?
Purpose - What is the purpose of the content? Is the content objective or biased?
Download a PDF about the CRAAP test here.