Although commonly used in a close conjunction with the cultural life in cyberspace, the term ‘virtuality’ is very malleable. The conceptual flexibility of ‘virtuality’ may reflect a salient implosive nature of contemporary culture that has been increasingly dependent upon simulation and the blurring of the boundary between culture and technology. This review deals with various ways in which many cultural critics use the term ‘virtuality’ by comparing it with other similar concepts such as ‘simulation’, ‘virtual reality’, and ‘cyberspace’. In so doing, I will show that ‘virtuality’ plays a crucial part in characterizing a general feature of contemporary electronic culture as well as that of Internet culture. Second, this paper examines some implications of McLuhanian and Baudrillardian theories of ‘implosion’ in the understanding of the flourishing forms of virtuality in conventional media culture. I will also explore their relevance to today's Internet culture. In the third section, I will look into several issues that the implosive structural properties of the Internet (e.g., the blurring of geographic, written/spoken, public/private, and the real/the virtual boundaries) pose in relation to the unfolding of social interactions in cyberspace. In so doing, this paper shows that virtual interaction in cyberspace may deepen and reorient a simulation-embedded nature of contemporary electronic media culture.