Cloaked Page
 

This method refers to, in view of the same url different visitors into different pages, and let the search engines into the optimization of the page, and the users enter into the normal page.

This method usually use IP to distinguish the difference of view is a general visitor or search engine Spider, and this method is often used in a few for each different customers different display Settings for the legal way, but once the wrong malicious use search engine, will not be accepted.