Internet Marketing - Quality Guidelines Avoid hidden text or hidden links. Don’t employ cloaking or sneaky redirects. Don’t send automated queries to Google. Don’t load pages with irrelevant words. Don’t create multiple pages, subdomains, or domains with substantially duplicate content. Avoid “doorway†pages created just for search engines, or other “cookie cutter†approaches such as affiliate programs with little or no original content. These quality guidelines cover the most common forms of deceptive or manipulative behavior, but Google may respond negatively to other misleading practices not listed here (e.g. tricking users by registering misspellings of well-known Web sites). It’s not safe to assume that just because a specific deceptive technique isn’t included on this page, Google approves of it. Webmasters who spend their energies upholding the spirit of the basic principles listed above will provide a much better user experience and subsequently enjoy better ranking than those who spend their time looking for loopholes they can exploit. If your Web site is mistakenly penalized for spam your best course of action is to contact the search engine and discuss remedies. If you are applying a technique that is considered spam, get rid of it. Know what is considered search engine spam and avoid it before it ever becomes a problem for you.
can you explain more on your last point; Avoid “doorway†pages created just for search engines, or other “cookie cutter†approaches such as affiliate programs with little or no original content. what exactly is door way page and how affiliate program is related to this approach
it basically means avoid sites who are just trying to get by the system. Affiliate with sites that have good content on thier site. And try and stay away from sites with non original information.