To link or not to link, that this the question. It became the question when certain companies who have no understanding of the dynamics of the Internet decided that they should have an Internet presence. The Internet became a medium for the masses when the Web was developed. The Web is a graphical representation of the information contained on the Internet, informally organized in a spider web like format.
Information is linked to and from anywhere else that anyone with a web-page deems appropriate.
Text based search engines were developed to index the content of the Internet in a more objective manner and there is no doubt of the utility of these search engines. However, the roots of the Web lie in the interconnection between and among separate and distinct Web sites. People or companies that published Web pages would link to other people's Web pages because they were relevant or simply because they were thought to be interesting. However, when someone designs a Web site they organize it in a particular manner. If someone links to the site because they find a page interesting that is deep into the Web site's organizational hierarchy, they aren't going to link to the home page and expect people to find their way down to the page in question.