Black Hat SEO

Black hat SEO also known as spamdexing attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception. One black hat technique uses text that is hidden, either as text colored similar to the background, in an invisible div, or positioned off screen. Another method gives a different page depending on whether the page is being requested by a human visitor or a search engine, a technique known as cloaking.

The following search engine optimization techniques are often called spamming, and should be avoided at all costs:

These and other similar techniques, while sometimes effective in generating an increase in traffic to your site, quickly fail. This sort of black hat techniques bring traffic totally irrelevant. Customers will withdraw from there seeing these dirty tricks. When the operators of a search engine discover these types of tricks, they will often remove the site from their index entirely.