A Popular Chinese Social Networking App Blazes Its Own Path - NYTimes.com
Geege Schuman stashed this in China
Weixin (pronounced way-shin) is this country’s killer app, a highly addictive social networking tool that allows smartphone users to send messages and share news, photos, videos and web links, much like America’s WhatsApp, or Line, a Japanese communications and messaging app. In the United States, a similar version is known asWeChat.
RELATED COVERAGEDealBook: A Globe-Trotting Serial Entrepreneur Finds Roots in China’s Start-Up SceneJAN. 20, 2014Just three years after being introduced in China, Weixin has nearly 300 million users — a faster adoption rate than Facebook or Twitter — giving the app a dominant position in what is now the world’s biggest smartphone market. It has already stopped the growth of the messaging service of the country’s biggest mobile phone company and provoked China’s largest Internet companies to create competing services.
A version of Weixin is offered outside China as WeChat. Petar Kujundzic/ReutersBut in the free-for-all in China, one leading social media company is not a factor. Analysts say the phenomenal rise of Weixin all but dooms any chance that Facebook will become the market leader there.
It's probably not a coincidence that WeChat and SnapChat have similar names.
Their parent company Tencent, have pretty much conquered the internet messaging/pretty much all things internet for a while in China.