What is cloaking?
The cloaking, also known as stealth, is a method used to raise a website’s search engine rank. It is based on providing a feeling for search engine that a website carries a different content. By cloaking, users get to websites that they did not expect. They see just a sympathetic and good looking website, but the content they search for is different.
It is questionable if the cloaking is ethical. It often depresses users and it is considered to be a black hat technique.