Cloaking is using a website optimization technique whereby a different web page is shown to the search engine than the actual web surfer. By knowing the search engine’s web bots different IP addresses one can serve up pages specifically for the search engines. Cloaking is a violation of the search engine guidelines. If and when you get caught your site will be removed from the search engines. Some companies that offer cloaking state that their service is undetectable; the search engines state that this is a false claim.  If your website is of value to you then DON"T use unethical means to do well in the search engines. White Hat practices will prevail.