Facebook,as everyone knows,is an online social networking service.However,survey has shown that the number of teenagers claiming to be active on Facebook had dropped to 56% in the third quarter of 2013,from 76% in the first.(http://www.forbes.com/sites/parmyolson/2013/11/12/heres-where-teens-are-going-instead-of-facebook/)

I agree with David’s opinion about the reason for Facebook decline(https://blogs.ubc.ca/zhangatan/2013/11/13/move-aside-facebook/).Basically it is because people are looking for application that allow for quick and easy access.From the survey,the rivals that took away Facebook’s customers is applications that provide quick communication method.

As a new Wechat user,I think what make wechat successful and popular is its voice messaging.It is super convenient and useful because I don’t need to take much time to text but just talk .Also,receivers can get to know your mood from your voice.This is a kind of communication method have the characteristic between phone call and text message.It targets mainly at teenagers,and their service completely cater to teens’ needs for fast,private and convenient communication.

The development of Wechat do have some impact on Facebook,but obviously their value proposition are different. Wechat users usually have already known each other in real life,but Facebook may focus more on knowing new friends and group talking.Clearly,as long as this two maintain their own characteristics,they can co-exist.