Doorway Page in SEO
 

Doorway pages is a part of Black hat SEO. Doorway pages are simple HTML pages that are customized to a few particular keywords or phrases, and they are programmed to be visible only by specific search engines and their spiders. The purpose of these doorway pages is to trick the search engines into giving these sites higher rankings; this sounds okay until you realize that they are not static destinations.

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.

Doorway Pages are basically created to rank highly for particular search engines queries. Google has itself proclaimed it as a web spam. The Google search team is constantly working on techniques to reduce impact of such web spam.

So I guess you have already figured it out by my explanation that this technique comes under black hat.

Doorway Pages is a part of Black Hat SEO. It is create to increase your webpage in search engine. In a HTML page, make keyword stuffing and increase title length, but it not visible to us. It only visible for search engine. It's spam if you were searching about "FOOTBALL" and you get the result "COMPUTER PARTS" webpage.

Doorway page SEO is the type of trick to increase the page rank of the websites.