A doorway page is an old technique used still used by some search engine companies. It is a web page loaded with keywords and text to attract the search engines. These pages generally look awful and are merely meant to attract people through the search engines. Doorway pages are often orphaned ( not linked to from the rest of the site). The search engines do not like these pages anymore and you should steer clear of companies offering * doorway page for only $. This technique is outdated and so are the companies employing it.