Doorway Pages

Quite simply, doorway pages are pages that have been optimised to rank highly on the search engines for one or two particular keywords.
You need to create doorway pages that are perfectly acceptable to people and search engines alike – legitimate, readable, content-filled doorway pages.
Good doorway pages should be more or less indistinguishable from the rest of your website. Use the same look and the same navigation, and pay as much attention to the content as you would on a normal page. We feel that a doorway page is an excellent opportunity to focus on one particular aspect of a product or service.