China has experienced rapid growth in internet and technology in recent decades. There are now nearly 400 million internet users in China, growing by 10 million per month, who engage heavily in social media and online activities like blogging, instant messaging, and gaming. While social media is strictly censored by the government, bulletin board systems (BBS) have become very popular as a heart of social media in China, allowing sharing of images, videos and content online through sites like QQ in an anonymous format. BBS sites help information spread through word of mouth and are linked to Chinese equivalents of Facebook and YouTube, showing how China's internet is revolutionizing while developing its own models and systems.