what is black hat seo ?

[OPI]

Black Hat is a SEO Technique, Which is Illegal and can harm your Website.

[Manpo Deal]

Its a unethical way of SEO. It is against to the Guidelines of Webmasters or Search Engines.

[BrilltechEngg]

In search engine optimization (SEO) terminology, 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.

[anirban09P]

Black hat SEO refers to a set of practices that are used to increases a site or page's rank in search engines through means that violate the search engines' terms of service. The term "black hat" originated in Western movies to distinguish the "bad guys" from the "good guys," who wore white hats (see white hat SEO). Recently, it's used more commonly to describe computer hackers, virus creators, and those who perform unethical actions with computers.

[david14beck]

Black Hat SEO is an illegal technique in SEO. Black Hat SEO is a technique which is the opposite of white hat SEO, which is trying to improve website ranking in search engines in wats that are not allowed in search engines like Google, Yahoo, Bing etc..
Black Hat SEO Techniques:
Keywords stuffing
Doorway and cloaked pages
Duplicate content
Hiding links and text
Spam blogs
Livestock link
Tiny URLs
Make comments spamming on other people's websites.

[CarolinaFlores]

Black head seo means doing seo through illegal means and against the webmaster guidelines

Hidden text
Doorway pages
Keyword Stuffing
Duplicate content
Spam blogs

[deekumar0203]

Black Hat

Refers to the use of techniques and strategies to get higher search engine rankings that break search engine rules
It is typically used for people who are looking for get-rich-quick scheme
Black hat techniques include keyword stuffing, link farming, hidden texts and links, and blog content spamming
Consequences in using black hat SEO will result in your site being banned and de-indexed

[neha0101]

In search engine optimization (SEO) terminology, 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.

Some examples of black hat SEO techniques include keyword stuffing, invisible text, doorway pages, adding unrelated keywords to the page content or page swapping (changing the webpage entirely after it has been ranked by search engines).