This company offers the world a new Web language -- Chinese. SINA Corporation operates four Chinese-language Web portals serving China, Hong Kong, Taiwan, and Chinese speakers in North America, and has more than 280 million registered users. The SINA.com sites offer news, lifestyle features, e-mail, and instant messaging; revenues mostly come from advertising sales. SINA also offers SINA Community (subscription-based content that includes community-based services and games), SINA Mobile (wireless services), SINA E-Commerce (online shopping), and SINA.net (search, e-mail, business listings, marketing, and e-commerce to businesses and government agencies).