Black hat seo

In search engine optimization ( SEO ) ,
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. these
could increase a page's ranking in a search engine result page ( SERP ). These practices are against the search engine's terms of service and can result in the site being banned from the search engine and affiliate sites. A list of tactics and strategies employed by black hat SEO practitioners have been openly denounced on Google's Webmaster Guidelines.
Recognized Black Hat SEO Tactics
The following SEO tactics are considered black hat and should not be exercised at all if you want to stay above board with Google and other search engines:

* Content Automation
* Doorway Pages
* Hidden Text or Links
* Keyword Stuffing
* Reporting a Competitor (or Negative SEO )
 * Cloaking
* Guest Posting Networks
* Link Manipulation (including buying links)
* Article Spinning
* Link Farms, Link Wheels or Link Networks
* Automated Queries to Google
* Creating pages,  sub-domains, or domains with duplicate content

Pages with malicious behavior, such as phishing, viruses, trojans, and other malware
So what are some common black hat seo tactics?

Hidden text – Having white text against a white background so that the user cannot see the text, but search engines can read that hidden text. This can be  involves the user of keyword stuffing, which I’ll describe in the next paragraph. Deliberately altering a website so that the content presented to search engines is different from that presented to the user is considered cloaking, another black hat seo practice.

Keyword stuffing – the practice of inserting a large number of your targeted keywords into the text on a given webpage, so much so that the content appears unnatural . It’s when a given page of text goes from easy to read and understand, to unnatural to read and hard to understand due to the same keywords being repeated over and over again. Search engines look to provide users with content that is helpful to them and that answers their questions – so web copy that lacks substance, and instead just mentions your keywords repeatedly without providing value to the reader, is not helping search engines meet their goal of providing the highest quality results to users, nor does it help users find the info they need.

Buying links – with links being one of the top two ranking factors in google’s algorithm, having a high quality, extensive backlink profile plays a major role in how well a website will rank in search results. However, you should beware of any business offering to buy you backlinks to your site, and you should never purchase links in general. Google has items in place to detect purchased links,and if they do find your site guilty of having purchased backlinks your site could be penalized as a result.

Source of the blog = Digital world