Related to advertising, because the pages want readers to continue accessing them or to watch or purchase another version. For example, the text of the Code of Federal Regulations or a bill or resolution is a primary source and is therefore a valuable resource. The law is the law. Courses, syllabi, faculty and staff, admissions information, libraries, etc. are detailed online for current and prospective students and parents. In addition, many educational sites have pages that highlight the faculty's research.
Some companies have links to their annual reports.
Association sites are designed to recruit and provide information to current members. An increasing number of publications are available online only. Currency is very important. Sites online help researchers access news locally and from abroad. If not, the page must be used with caution.