The more criteria listed below that a website has, the better the chance of it being a quality website.
*Accuracy. The page lists the author and/or institution that published the page; a means of contact (email, phone, address) is provided.
Ask yourself: Who made the website and what is its purpose?
*Authority. The page lists the author credentials; the URL has a preferred domain name (.edu, .gov, .org, or .net).
Ask yourself: Is the author qualified to write about the subject?
*Objectivity. The page provides accurate information with limited advertising; the information is presented objectively.
Ask yourself: Does the author express opinions or facts?
Are there a lot of ads?
*Currency. The page is current and updated regularly (as stated on the page); the links (if any) are also up-to-date.
Ask yourself: When was it last updated?
*Accessibility. You can view the information properly--not limited to fees, browser technology, or software requirements.
Ask yourself: Is it easy to find the information you need?
Kapoun, Jim. "Teaching undergrads WEB evaluation: A guide for library instruction." C&RL News (July/August 1998): 522-523.