Abstract
Over the past network research often Internet users metaphor for "community", but not questioned in depth the nature of the community metaphor is really in line with the collective nature of the Internet users. Community metaphorical projection of the early researchers of the Internet users of collective equality, democracy, open discussion and mutual trust between the pursuit of such values that the network on this new medium can overcome the physical space restrictions, equal and rational manner, the discussion a public policy issue, with the Internet becoming more common with the evolution of a more convenient medium emerging, gradually the network users can find the collective is not as earlier thought, "Utopia." But the Internet is neither a "utopia", but it led to many earlier researchers can not imagine mutual trust between strangers together to the benefit of collective strength. This study attempts to BBS sites PTT (ptt.cc) “BuyTogether” board observation, re-discovered other possible metaphors to understand the user's lifestyle and build-up networking model, a better understanding of Internet users collectively How the information is limited, the case of limited resources, mutual trust, cooperation and mutual benefit in turn. To understand the combined purchase of development in order to participant observation, statistical analysis methods, studied the quantitative and qualitative change in merger and acquisition, and further to Luhmann (Luhmann, N) of the systems theory and Sahlins (Sahlins, M) to analyze the structure of the concept of merger and acquisition phenomenon, found that merger and acquisition transactions and discussion boards will be looking forward to the cumulative total value, when the expected value is accumulated to a certain extent, it was generally believed that others will follow the rules of engagement, so expect their energy and money, the betting will be planned in the reward, when the groups believe that the rules exist and I believe others will be so when the rules of engagement, structure, through practice, which came into being.