China has over 513 million internet users as of 2012, with internet and mobile internet usage growing rapidly each year. Social media platforms like Qzone and Weibo have hundreds of millions of active users, and e-commerce has also grown tremendously, with over 195 million online shoppers spending over 6 trillion RMB in 2011. Major players in the Chinese internet market include Baidu in search, Alibaba in e-commerce, Tencent in social media and gaming, and Sina in portals and microblogging.