What is Black hat Technique?

Is it really good for websites to have black hat seo.
what are the advantage and disadvantage of BlakHat SEO?

Black Hat SEO techniques are those that does not follow Google Webmaster guidelines. Black Hat techniques are used to rank your website faster in search engines, but they are not at all effective or supported by search engines. Your website can get penalized or even ban for such negative activities.

Black Hat SEO is good for getting instant ranking but it is UN-ethical of getting ranking. These techniques are hated by the search engines. Sites are penalized because of such techniques

It's a highly frowned upon way of making your pages rank higher. Search engines respond to it really harshly either by lowering your site on their results or removing it all together.

Black Hat SEO is unethical way of ranking your website but It is not durable as Google can detect illegal activity on your site and punish you ASAP

Black hat SEO helps to increase a page rank in search engines who make use of terms and conditions. The use of SEO strategies, techniques and tactics that focus only on search engines and not on human audience, and usually does not make use of search engines guidelines is consider as Black hat SEO.

Black hat SEO is technique in which we use duplicate issues like content, photos, video, hidden links, keyword stuffing doorway pages and many other. It is not good for websites.

They are,
>keyword stuffing
>Hidden text
>cloaking
>doorway pages
>duplicate content
>spam blogs
>page swapping

Black hat SEO is not good for website. Google hate it. Black hat SEO is not good for your website's ranking as well

Black hat SEO is something in which illegal methods are used to optimize any website and getting traffic. Black hat SEO not follow the rules and regulations of google but it is good if you want fast traffic, but you may be penalized by google algorithms for using black hat techniques.