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ExpertiseExpertise is having extensive skills or knowledge in a particular area. If there is evidence of expertise on a website, it means that the author specializes in information about a certain topic or the contributors are experts in the field about which they are writing.
A good example of expertise is The Weather Channelopens in new window website. The website focuses on weather around the world and the contributors are meteorologists and scientists. The level of expertise for this site is high and makes it a reliable source of information regarding weather.
Authority is an accepted source of expert information or advice. The website is known for its accuracy and up-to-date information. This often goes hand-in-hand with expertise. For instance, if someone wanted to know the latest news on sports, they could visit ESPN onlineopens in new window. ESPN is a well-known authority for sporting news worldwide. The level of authority for this site is high and makes it a good source for information regarding sports.
Trustworthy sites have a well-established reputation for being created by experts with reliable information. Websites created by trusted institutions like the U.S. governmentopens in new window or universities are trustworthy. Look for sites that end in .gov or .edu.