摘要
In the web 2.0 era,Social Networking Sites(SNS)provide highly interactive platforms for individuals with the help of digital technologies and internet recently.SNS(Facebook,Instagram,Twitter,LinkedIn,WeChat,Weibo,etc.)are very popular across the globe.People use these platforms to express and share knowledge,ideas,opinions,experiences and insights.As such,SNS have become an important online channel for people to share knowledge.
