Tell me something about Black Hat SEO?

[AmpleInn]

1. Paid Links
2. Duplicate Content
3. Article Spinning
4. Keyword Stuffing
5. Hidden Content

[jeffronald19]

Black hat SEO refers to the use of aggressive SEO strategies, techniques and tactics that focus only on search engines and not a human audience, and usually does not obey search engines guidelines.

[hariandro]

Great question ..This should be asked before getting into black hat seo..Spamming technique is otherwise known as blackhat methods..These are the following techniques used now a days..
KEYWORD STUFFING,
SPAM COMMENTING,
INVISIBLE TEXTS ,
ARTICLE SPINNING,
DUPLICATE CONTENT,
CLOAKING,
but if u use these techniques they are usually detected sooner or later and your page rank may get lower also be banned..Better advise is use greyhat technique..