Keyword stuffing, invisible text, doorway pages, and cloaking are common black hat SEO techniques. Black hat SEO aims to manipulate search engine algorithms through these and other unethical methods such as typo spam, link dumping, faking page ranks, scraping content from other sites, and tactics to lower competitors' rankings. Questions about black hat SEO techniques can be directed to the listed websites.

1. SEO – Black Hat Prepared by: Murali Venkatesh http://www.prestiva.com/seo/ http://blog.prestiva.com Black Hat SEO – Search Engine Optimization

2. Common Techniques Keyword Stuffing Invisible Text Doorway Pages Cloaking

3. KeyWord Stuffing The idea of Keyword stuffing is to repeat a keyword as often as possible throughout a website without setting off red flags.

4. Invisible Text Invisible text works by using a number of techniques including same color text, negative z-index, and text overlaid on top of Flash objects.

5. Doorway Pages Simple websites with stuffed content that is designed to only ever be seen by search engine spiders. Scripts and server side programming is used to send spiders to these optimized pages.

6. Cloaking Cloaking works by using the features of the HTTP request in order to identify and deliver unique content to a specific ip or User-agent.

7. Other Techniques Typo Spam Link Dumping Faking Page Ranks Content Scrapers Google Bowling

8. Typo Spam Typo spam works by having multiple versions of the same site, most of which have misspellings in them, sometimes redirecting to the proper page when visited by a non-spider.

9. Link Dumping Link Dumping is simply posting a link to your site on as many websites as possible. Often this is done by posting topics in a forum, blog, or similar function. It can also be done by more nefarious techniques.

10. Faking Page Ranks By using cloaking and redirection techniques, you can build up a page rank off of your competitor’s. After about 3 months you should have higher page rank and you end the redirection.

11. Content Scrapers Content Scrapers are computer programs that go out onto the web and borrow content from other sites for you. These content scraper programs scrape what is on other sites so you have the content for your sites.

12. Google Bowling Generally using off-site tactics to bring down your competitors rankings. Examples include; links from bad neighbors, un-stealthy redirects, mass automated querying. The idea is to make it look as if your competitor is using black-hat techniques to get them banned.

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