Black Hat and gray hat

[saurabh mathur]

Black hat seo refers to the technique that is basically used to get higher search engine. They mainly focuses on only search engines and not upon the human audience. They include some of the techniques in them such as keyword stuffing, link farming, hidden text, etc.

Gray hat seo technique is for computer hacker or the computer security expert who may be sometime violate the laws or typical ethical standards, but does not have malicious intent typical for black hat hacker.