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Despite the Web’s vastness, most of the world’s knowledge is still contained in printed works. Authorities in many fields publish their works primarily in books and scholarly journals. Many of these works are copyrighted, so they won’t likely be available on Web sites that a typical online search engine will lead you to. And if they are available, you may need to pay a fee to access them.

Moreover, you can’t assume that information you find online is credible, since most of it is not vetted in the same way that books and periodicals are. There are literally millions of Web sites created by individuals, advocacy groups, clubs, and businesses that may contain incorrect or biased information.¹⁵ As anyone with a Tumblr, Facebook page, or Twitter feed knows, it’s a snap for anyone to publish as much and as often as desired in the online world. Frequently, Internet information is posted without any professional review.¹⁶

As a consequence, many of the Internet sources found by students do not have the quality that is expected by their instructors. Professor Wendy Lerner Lym of Austin Community College compares Internet research to fast food: sources can be quickly obtained, but they are not good for your academic health.¹⁷ Research has confirmed the low quality of many sources found on the Web. For example, a team headed by Professor Chuanfu Chen of Wuhan University, China, recently evaluated 2,814 Web pages found through keyword searches on Google, Yahoo!, and AltaVista on such topics as genetically modified foods. The researchers concluded that 11 percent of the Web sites were very weak, and 45 percent were weak. Only 11 percent were rated as excellent or good.¹⁸

Some students have been taught to evaluate the quality of a Web site by assessing its URL’s top-level domain—the designation at the end of a Web address that indicates the site sponsor’s affiliation (for instance, .com was assumed to designate a commercial business, .org an organization, and .net a network). However, for years, Web sites have been given the choice to register as .com, .net, or .org without restriction.²⁰ Any entity with a product or an idea to sell can strategically choose the term it will use. App developers can request a variety of labels, including .App, .Cloud, and .Unicorn.²¹

Furthermore, a Web site’s name does not necessarily indicate its credibility. For example, a site such as TobaccoTruths.org may look like it was created by research scientists with impeccable credentials, but it could have actually been created by public relations specialists funded by the tobacco industry; similarly, a professional, polished design offers no guarantee of a site’s credibility.