Poking in the online world nowadays has become familiar to the social networking sites in Vietnam. It is a way for users to give a gentle signal to friends or relatives to draw attention or show interest. Poking in social networking, many people think this is a fun game but can mean differently depending on the context. Poking in Vietnamese social network is becoming more and more popular, becomes a communication method that does not need to speak. As simple as poking in social networking, it shows the friendly culture of the Vietnamese cyber world. These acts of poking help not only increase interaction but also help build a closer relationship between users. Therefore, poking in the social networking site in Vietnam has become a symbol of friendship on the cyber community.