Sina Corporation is a Chinese online media company founded in 1998. It is best known for its popular social media platform, Sina Weibo, which allows users to post and share short messages, similar to Twitter. The company also provides news, entertainment, and other online services, making it a significant player in China's digital landscape. In addition to Sina Weibo, Sina Corporation operates various websites and mobile applications that cater to different interests, including finance, sports, and technology. The company has played a crucial role in shaping online communication in China and continues to expand its services to meet the needs of its users.