Black Hat SEO
In the SEO world, Black Hat SEO techniques are the bad guys, the mafia members that break all the rules but don’t seem to care. You can get fined, penalized, or even banned for using black hat SEO methods.
Black hat SEO is the term used to describe any unethical and dishonest optimization tactics that boost a website way up on a search engine’s SERPs rakings list. This means that a website constructed using 1 or more “black hat” techniques will come up higher on the search list than if it was constructed ethically.
So, when people are using Google, Yahoo, or another search engine to look for a information, a particular company, products, or services, one website will keep popping up even though it should logically be ranked much lower on the list.
Once banned, it can be difficult to be reinstated from the SERPs rakings index on Google, Yahoo, MSN, Ask, or other search engines.