Not all information is created equally.
This is especially true of information found on the open web, via Google or other search engines. While there is high-quality information to be found, there is also utter crap. Whether for one of your courses or for your personal use, one of the key parts of the research process is evaluating your information, i.e., using your Crap Detector.
Based on the CRAAP test was developed by librarians at CSU Chico.
Quickly Evaluating a Journal Article Tool