Black Hat SEO tactics are considered any techniques or methods that try to deceive the search engine into displaying a web page or a site that would otherwise never be featured in those search results. Examples for this include cloaking (misleading the search engine spider that a page is different than it is), doorway pages (misleading the use that they will find something relevant to their query on a page, whereas in fact they’re redirected to an entirely different page), keyword stuffing (using the same words and phrases over and over again to fool the search engine that the content is more relevant than it is), link spamming (a large amount of low quality links leading to a certain website; in most cases the process is fully automatic), automated content spinning (using software to rearrange the words in a certain page to create the illusion of new, original content), and more. Most users who are not too familiar with SEO (or at least Black Hat SEO tactics) would not intentionally use these methods, but it’s possible to employ them unintentionally, nonetheless. This is where you need to beware or you might get penalized.
Sometimes in our attempts to convey a point, we repeat the same words and phrases over and over again. We may not even realize we’re doing it, but it can harm us in the long run nonetheless. That’s why it’s important to stay focused when we write our content so we can make sure that we avoid any unwitting mistakes.
Some people also go out of their way to get links to their sites, and even though that’s generally a good thing, it can also harm you. If the links are coming from low quality sites (whether you know about them or not), you may get a penalty. You should regularly check the inbound links using the proper tools.
You may not be consciously using these Black Hat SEO methods but these are common mistakes leading to them nonetheless. Be careful with your content.