I would share the few black hat techniques i have read about: 1) Invisible Text 2) Keyword Stuffing 3) Cloaking 4) Doorway Pages
method of black hat technique is used of doorway pages.. Black Hat search engine optimization is customarily defined as techniques that are used to get higher search rankings in an unethical manner. These black hat SEO techniques usually include one or more of the following characteristics..but thats technique is good for to done the website SEO........
You may check out this article on black hat seo. http://lmgtfy.com/?q=what+is+black+hat+seo? It is something that gives you fast result, but of cz, get you banned by Google fast as well.
I think black hat seo is the unethical way of optimization for your website. With black ha seo you can get benefits but not for long time., at the end when search engine or Google track your links so it will penalize your website.
Using black hat techniques, you will get a rapid traffic, and also rapid banned by search engine. do not use it if you want your site still alive in search engine.
Black hat techniques in seo are illegal techniques (i.e) website not with in the rules and regulations.
Black hat means you do SEO in ways that don't conform to the mythical 'legal' rules for optimizing SE marketing or the gurus who promote them. Sometimes the tactics don't even involve SEO, like using Web 2.0 properties and such to get good traffic. IF you get slapped by Google, there are workarounds for that, too.
Black Hat search engine optimization is customarily defined as techniques that are used to get higher search rankings in an unethical manner. These black hat SEO techniques usually include one or more of the following characteristics: breaks search engine rules and regulations creates a poor user experience directly because of the black hat SEO techniques utilized on the Web site unethically presents content in a different visual or non-visual way to search engine spiders and search engine users.