Example: This website lists supposed facts about marijuana, but there is no source given for those facts. Information that can’t be traced to a source should not be used for research unless the facts can be verified elsewhere.
Examples: This website is sponsored by PlanetRx, a drug retailer. The editor of the site is one of the leading health writers in the United States, and there is a doctor on the management staff. The information included here may well be accurate, but we should remember that it may also be biased because the main purpose of the site is to sell pharmaceuticals.
Examples: This website is sponsored by the Depression and Related Affective Disorders Association in conjunction with Johns Hopkins University. The association is comprised of patients, family of patients, and professionals. It is a non-profit organization. This is a better source of information than the first website .
Examples: This website uses the hammer and sickle (symbol of the communist party) and other images to make it show that they have a definite opinion on the issue of gun control. It is clear right from the beginning that the information found on this website will only show one side of the gun control issue.