As per latest tweets from Matt Cutts(Google Engineer) and Prageeth P (SEO Expert), Google is to come down strongly on websites that use black hat SEO strategies such as cloaking. Cloaking is a form of search engine manipulation. Cloaking means that search engine spiders get fed one website, while the web surfer views another. What the search engine gets is usually a page with the same keyword repeated several times over, while the user gets a nicer page which may or may not have those keywords.As per the twitter post from Matt Cutts, “Not just page content matters; avoid different headers/redirects to Googlebot instead of users.”
Always avoid Black Hat SEOBlack Hat SEO is tempting; after all, these tricks only work, temporarily. They do end up getting sites higher search rankings; that is, until these same sites get banned for using unethical practices. It’s just not worth the risk. Use efficient search engine optimization techniques to get your site ranked higher, and stay away from anything that even looks like Black Hat SEO.