The change of communication media changes people life style and moves toward to mobile commerce oriented these few years. Due to various activities on social media and people tending to search the words of mouth (WOM) of products and service before their purchasing, how to facilitates the new emerging new media wisely has become a new issue. This thesis takes a new social media and knowledge platform of “LINEQ” as an example to explore and concludes some finding as the followings. 1. The mobile devices are small and hard to read, so this thesis aims to examine the best length of WOM on mobile devices first by using for social media. 2. The demographics of users of LINEQ. 3. The influences of market mavens on LINEQ. 4. The influences of positive and negative WOM effects and their influences on LINEQ.