All sources should be evaluated but you must be particularly careful when using websites for information. Anyone can publish something on the web so there is a wide range in the quality of information. Below are some of the things you need to look for or pay attention to when evaluating online sources.
Accuracy/Content/Reliability
Authority/Credibility
Currency/Timeliness
Relevance/Appropriateness
Purpose/Intended Audience
Bias
Watch the video below for more discussion on evaluating online sources.
A mnemonic is a device for helping to remember something. These acronyms/initialisms can help you remember some of the common web evaluation criteria.
A printable handout with criteria for evaluating Internet resources (this handout is also available in Library 101).
Sometimes we need things explained to us in different ways before we can truly understand them. If the material here isn't reaching you, feel free to try one of these guides from other institutions that also have excellent information on evaluating web sources.