Nowadays, online activities are important not only to socialize and share common interests but also as the source to communicate and search for information. By expanding the technology acceptance model, the purpose of this paper is to provide a research model to examine the importance of online (information quality, system quality and service quality) and offline (offline activities) features. This research study the importance and quality of online (information quality, system quality and service quality) and offline (offline activities) features which will influence the perceptions and attitudes or behavior of virtual communities and how the influences will sustain the virtual communities websites. In order to sustain a successful virtual community, attention must be paid to enhance both online and offline interactions, including content management, specific sets of web site functions and offline communication.