It is often difficult to identify the credentials of Web page authors . Many documents do not provide links which allow the user to identify the institution, department or individual sponsoring a site. Much of the information found on Web sites is not validated by footnotes or primary resources. Religion on the 'net offers no author documentation. Revisiting Civil Religion provides links to the authors' credentials and footnotes.
Search engines provide minimal descriptions of Web sites retrieved.
Relevance to your topic is usually determined by computer software subjectively interpreting a query. Some engines, like Google, provide page rankings which may be deceiving . The PageRank Explained section of the Why Use Google page explains a system like this. Slanted opinions are often represented as fact. This lack of proof or validity may be clouded by the attractive format in which the data is presented.