Baidu.com  is the leading Chinese search engine for websites, audio files, and images. Baidu offers 57 search and community services including an online collaboratively-built encyclopedia, and a searchable keyword-based discussion forum.As of March 21, 2008, Baidu is ranked 19th overall in Alexa's internet rankings.

Baidu.com provides an index of over 740 million web pages, 80 million images, and 10 million multimedia files. The domain baidu.com attracted at least 5.5 million visitors annually by 2008 according to a Compete.com survey.

For a company expecting to develop in China, Baidu SEM and SEO is very important web promotion method.