Many courses will require using this valuable resource for academic research. LINCC sources are from scholarly journals, newspapers, magazines, and other copyrighted, reviewed, and professionally prepared sources which are different from the Internet where anybody can and does post anything. Some sources on the Internet seem as though they have good information such as Wikipedia, but that is a wiki where people who are not professionals in the field can post information. By its own disclosure, some pages are in a state of development and have not been reviewed for accuracy or presentation of all sides on a scholarly debate.
Citation patterns are also known to be affected by unethical behavior of both the authors and journal staff. Such behavior is called impact factor boosting, and was reported to involve even the top-tier journals. Specifically the high-ranking journals of medical science, including the Lancet, JAMA and New England Journal of Medicine, are thought to be associated with such behavior, with up to 30% of citations to these journals being generated by commissioned opinion articles.  On the other hand, the phenomenon of citation cartels is rising. Citation cartels are defined as groups of authors that cite each other disproportionately more than they do other groups of authors who work on the same subject.