Doorway pages are web pages that are created for spamdexing, this is, for spamming the index of a search engine by inserting results for particular phrases with the purpose of sending visitors to a different page. They are also known as bridge pages, portal pages, jump pages, gateway pages, entry pages and by other names. Doorway pages that redirect visitors without their knowledge use some form of cloaking. for more information read this en.wikipedia.org/wiki/Doorway_page
doorway pages are pages that have been optimised to rank highly on the search engines for one or two particular keywords. Nowadays, you often hear people saying that it is a very bad idea to create doorway pages – even though there is nothing wrong with the basic technique. You can check a doorway website here funnypicture.ws
This is the example of door way pages http://www.idrive4less.com/ Do Not use This strategy if google caught they will blacklist you site
If someone make a doorway page for his rival site... will google band his rival site without knowing that he is not doing this...?