Doorway term explained
Doorway is an html page generated by the optimizer with the sole purpose to redirect users to another resource.
Doorway pages are created for specific search query and the content of this site is characterized by a high density of keywords embedded in the tags of the utmost importance when ranking: the page title (<title>), headers (<h1>, <h2>), emphasis (<b>, <strong> <i>). In addition, the content almost always a redirection (redirect) that directs the user to promote the site.
But the task of the website is not only creating a quality theme traffic for your main web resource. Doorway also sends him your link juice, thus improving its search status. To optimize any website for any possible requests and to maintain the readability of the texts is impossible. Therefore, the creation of multiple doorway pages is the best way out of this situation.
All doorways are divided into black, grey and white. Black are automatically created generating special programs contain automatic forwarding to the main site and placed on free hosting. Such doorway pages are viewed by search engines as spam and sooner or later, they will be excluded from your index by means of a ban or will be pessimize. The life of a black doorway, generally short.
Gray doorway pages are created manually and are not automatically redirect. Their goal is not to create traffic and increase the reference mass promotion of website by passing it a reference to his weight. This is a full sites with readable content and with links to the main resource. But to perform their task they will be able only after the promotion, when to gain weight and achieve certain indicators.
White doorways comply with all license conditions and requirements of search engines. In fact, they are just advertising the basic website, and have original text and graphics and colorful links on the main site.