Definition: A doorway page is content created specifically for the purpose of garnering high placements in the search engines.
How to Market Your Web Site with Ethical Linking
Your web site’s search engine rankings are determined in part by the popularity of your site. This link popularity is a function of the quality and number of other web sites that link to your site. Generally speaking the more quality inbound links to your site, the higher your site will appear in the SE results for relevant search phrases.