There are reliable and unreliable Web sites in most categories of Web sites. A personal Web site, which expresses the interests and biases of its author, is a legitimate use of a Web site, as long as the Web site owner is up front about his or her identity. Like any other source, the authority of the author helps determine the value of the information. Be wary of sites which publish information without letting you know if the information is a personal view or, if not, what the original source is. Web sites can masquerade as one type but may have a hidden agenda.
Any group can give itself an official sounding name or logo.
There are other extensions, such as the abbreviation of a country, ie. It gets confusing when dealing with personal Web pages. Doe has bought Web space for a personal Web page. Some universities, like GMU, provide Web space to faculty and student, so personal Web pages can reside on an education site.