Tips for your website

Google Quality guidelines

Quality guidelines - basic principles

• Make pages for users, not for search engines.
• Avoid tricks intended to improve search engine rankings.
• Don't participate in link schemes designed to increase your site's ranking or PageRank.
• Don't use unauthorized computer programs to submit pages, check rankings, etc.

Quality guidelines - specific 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.
• Don't create pages that install viruses, trojans, or other badware.
• Avoid "doorway" pages created just for search engines, or other "cookie cutter" approaches such as affiliate programs with little or no original content.
• If your site participates in an affiliate program, make sure that your site adds value. Provide unique and relevant content that gives users a reason to visit your site first.
Ref: Webmaster Guidlines