Much scholarly research is still only available in traditional print form. It is safe to assume that if you have limited background in a topic and have a limited amount of time to do your research, you may not be able to get the most representative material on the subject. So be wary of making unsupportable conclusions based on a narrow range of sources. The site can give you clues about the credibility of the source. They are often informal.
Individuals can post their resumes, link to favorite sites, showcase their interests and ideas.
Some personal Web sites also serve as professional sites. For example, many professors publish their syllabi, course material and, in some cases, their scholarship, on their personal Web pages. They can be relatively mainstream or radical in interests and vary widely in credibility of information. Special interest sites are, by their nature, biased. When using such sources, your readers should be aware of the source's special interest.