Google (GOOG) has launched a special free advertisement service for Chinese enterprises.

Under Google's new policy, companies can release their advertisement and promotions via a virtual community of local businesses set up by Google and the search result of their information will be displayed on the search results for Google.com.

Generally, businesses need to pay money for ads on search engines, and those who pay the most will have their information appear in more favourable positions.

Google's Chinese competitors Baidu.com (BIDU), Sohu.com (SOHU) and Sina.com (SINA) have yet to launch similar services.