Doorway pages, the pages which presents the visitors fake information and re-direct them to a different page. These pages are marked basically for Spamming, Spamdexing.

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.

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This comes in black hat SEO as it is been used to divert the attention. One page is made for crawler and another will be opening for users.

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how to check weather any site has used doorway page or not any idea.

Doorways are sites or pages created to rank highly for specific search queries. They are bad for users because they can lead to multiple similar pages in user search results, where each result ends up taking the user to essentially the same destination.

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.

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