Black Hat is - illegal way to promote your website like - using some submission softwares and applications White hat is - Pure manual step by step seo work for a website- which is always best. WE are White hat - Google, Yahoo, Bing, Yandex, ASK and other search engine Experts. thanx.
Black hats anticipate that their sites may eventually be banned either temporarily or permanently once the search engines discover what they are doing.
Black hat SEO is procedure that tries to achieve high rankings in short time by using various SEO techniques that don't follow search engine guidelines, or treated as means of deception. One black hat technique uses text that is hidden, either as text colored similar to the background, in an invisible div, or positioned off screen. White hat SEO is Called as ethical SEO, it follows search engines guidelines. In this a content page that the search engine indexes and subsequently ranks, would contain the same content that a visitor would see.