Because of the way Google, and other search engines now work, your site will get a far higher ranking if it contains a great deal of informationarticles, tips, links, and so on, all on one specific topic.
You can use many methods to increase the amount and quality of this type of content on your site. As mentioned earlier, one way is to use sites such as http://www.goarticles.com and http://www.findarticles.com to find free articles that are relevant to the subject matter of your Web site.
Relevant content can also be included from a number of newsfeed sources; some of these are free, and some are not. For example, IT and technology articles are freely available at http://www.DevShed.com. DevShed makes it very easy to include their articles feed (there are many links in the content back to DevShed, so it is in their interests for these articles to appear on many sites). See http://www.developershed.com/devtext.php.
PRWeb makes its press-release newsfeeds freely available in various subcategories so that you can select the newsfeed that is most appropriate to the purpose of your site; see http://www.prweb.com/rss.php.
Yahoo!, Reuters, and other large organizations make available various levels and types of content feeds/newsfeeds; prices vary dramatically for the different types of feed. These organizations have some very strong links with portal providers such as Plumtree and BEA Weblogic, so it can be easier to get this content if you are using a portal product; check with your portal provider for more information.