SINA Corporation (SINA) is an online media company that offers internet users to access professional media and user generated content. The company operates through digital media network of SINA.com, SINA.cn and Weibo.com. It offers distinct and targeted professional content on region specific websites and a range of complementary offerings. SINA provides information and entertainment content from SINA portal customized for mobile (WAP) users. The company’s advertising product offerings include banner, button, text-link and in-stream video advertisements that appear on pages within the SINA network, channel and promotional sponsorships, and advertising campaign design and management services. It offers free interest-based channels that provide region-focused format and content. The company also operates in Taiwan, the US, and others. SINA is headquartered in Shanghai, China.