Black Hat SEO or Spamdexing

An SEO technique, tactic or method is considered as Black Hat or Spamdexing if it follows the followings.

• Try to improve rankings that are disapproved of by the search engines and/or involve cheating.
• Redirecting users from a page that is built for search engines to one that is more human friendly.
• Redirecting users to a page that was different from the page the search engine ranked.
• Serving one version of a page to search engine spiders/bots and another version to human visitors. This is called Cloaking SEO tactic.
• Using Hidden or undetectable text or with the page background color, using a tiny font size or hiding them within the HTML code such as "no frame" sections.
• Repeating keywords in the Meta tags, and using keywords that are unrelated to the site's content. This is called Meta tag stuffing.
• Calculated placement of keywords within a page to lift the keyword count, variety, and density of the page. This is called Keyword stuffing.
• Creating low-quality web pages that contain very little content but are instead stuffed with very similar or related key words and phrases. These pages are called Doorway or Gateway Pages
• Mirror web sites by hosting multiple web sites all with conceptually similar content but using different URLs.
• Creating a rogue copy of a popular web site which shows contents similar to the original to a web crawler, but redirects web surfers to unrelated or malicious web sites. This is called Page hijacking.

Always be away to adopt any of the above all Black Hat tactic to improve the rank of your site. Search engines are smart enough to identify all the above proprieties of your website and finally you are not going to get anything.