domain spam
 

SEO novices tend to think, the registered N a domain name, are connected to a master station, which can increase the master station PR. If this N a domain name has its own website, is nothing. But if N a domain name all point to the content of the Lord, or are only a few pages, or even repeated page, it will be considered as a kind of SEO cheating. For domain name bombing behavior, the search engine's attitude is: these "subsite" delete, if the circumstances are serious, the master station will be punished.