Fresh, interesting and informative content makes your site sticky. People stay and read awhile, and, they come back. The better your content, the better your ranking in many popular search engines and, as an added bonus, the more opportunities your customers have to learn where to find your web site. Informative content, fresh and lively, encourages others to link to a site, especially if your content is relevant or compliments that site's content. Fresh, interesting and informative content makes your site sticky.
People stay and read awhile, and, they come back.