Keyword stuffing is the practice of trying to get as many keywords into a sentence as possible.Giving high quality information in an appealing manner is going down the drain.

Keyword Density just means what percentage of your content consists of your target keywords.Also the ideal keyword density changes with the type of keywords.

Guest post is when a blog or website decides to post an article written by someone other than themselves or a staff write.If visitors like what they see, those visitors may convert to regular readers and even product buyers on your own blog.

Link Juice is how Google rates or ranks the quality, relevance, and popularity of your site. If the link has more pull, then it has more link juice.

Black hat Seo is considered as unethical techniques used to get websites increased exposure in search engines.Search engines can detect that and the result will be catastrophic for the website.