Doorway pages are called as Gateway or Bridge pages.These are custom pages created with a set of keywords that will be shown to the search engines to redirect traffic. If a website like http://www.pqr56.com/ is gateway pages optimized with keywords “pqr56â€, this webpage will be visible to visitors when they search for the keywords, but clicked on the links they will be redirected to the original web page. But the search engine spiders may index these doorway pages for the same keywords present in the original webpage. Most of them are created independent of the original website. Bridge pages are created using automated software, and then these are submitted to search engines individually. This is obviously a blackhat SEO technique that should not be followed. These pages are tracked by the search engine spiders very easily. The links of these pages are not submitted in other sites, but this page has links to a specific website.
door ways pages are simple like simple or bridge pages of your website don't try to crate pages like this for more details you can visit http://en.wikipedia.org/wiki/Doorway_pages
Typically these pages are created as a strategy to position a specific product or service quickly, exposing everything you want and having a form or something to fulfill its mission (budget, sales, etc)
Hi, Doorway pages are Web pages designed and built specifically to draw search engine visitors to your website. They are standalone pages designed only to act as doorways to your site. Doorway pages are a very bad idea for several reasons, though many SEO firms use them routinely.
but i think there are several ways to avoid it. Try to make your waydoor like a normal website with some useful content, what do you think?