Be wary of sites that do not state anything about their sources of information. Considering the copyright laws that cover all forms of communication today it is important for authors to report or cite their source of information. If the source is vague, the information may be unreliable. A conscientious website will post the date on each page and change the date each time the page is updated. If the site does not have a date at the bottom of each web page then you have no way of knowing how current the information is that you are reading.
Outdated information can linger on the web for many years.
Websites written for medical or rehabilitation professionals may be confusing or alarming for the average lay person. On the other hand, websites written for lay persons may not include the detailed information a doctor is looking for in order to make a clinical decision. Choose a site that is written for your needs or use additional resources to correctly interpret the information that you find on a technical or specialist-oriented website. Sites sponsored by organizations and projects often have staff assigned to write, edit and update web page content. A good website will always make it easy for you to get in touch with them and ask them any questions you need to ask about the content of a web page.