Question authority by duncan c is licensed under CC BY-NC 2.0 and Question everything by TijsB is licensed under CC BY-SA 2.0.
WEB WARNING ABCs
Authority - Is the website from an authoritative source? Check "About Us."
Bias - Is the website trying to sell you goods or an idea?
Currency - Is the information current? Check the website date
Although excellent .org, .com, .net sites exist, use the search engine's Advanced Search to get what might be more
reliable results by limiting the domain name to .gov or .edu -- or use Google Scholar.
Remember, though: .edu websites can be for elementary or middle or high schools, not just colleges and universities, and the items you find can be created by students!