Doorway pages can be cleverly developed to bring in a large amount of free traffic for the website. Doorway pages are also called gateway pages and are optimized pages submitted to search engines that help the site generate traffic by targetting specific keywords through individual entry points to the website. The main purpose of doorway pages is to get them spidered into the search engines so that they help attract traffic for the site from different keywords embedded within the doorway page.
Search engine algorithms are developed in such a way that they apply various forms of logic to relate keywords or sets of keywords with single webpages in their database of pages. Doorway pages are developed by optimizing the page to a very high degree so that a search engine algorithm ranks the page high for the keyword for which it is optimized. Since doorway pages are designed for search engines, they often do not carry the look and feel of the main website. Doorway pages are developed with more keyword rich textual content and for high download speeds.