YY.com – Wikipedia

YY (Chinese: YY语音) is a major Chinese video-based social network with over 300 million users. It features a virtual currency which users earn through activities such as karaoke or creating tutorial videos and which is later converted to real cash. Launched in 2005 as duowan.com (NASDAQ: YY), it originally targeted gamers, before broadening to include video streaming and chat features for …

: https://en.wikipedia.org/wiki/YY_(social_network)