According to the rapid development of information and Internet, the frequency of Internet use and the ability of individuals using the Internet were developed, and in the way of information acquisition dependence on Internet usage is increasing. Internet is more of an information delivery medium easily participated by users and opened to them than an information delivery medium of the past because of not a unilateral medium but a medium which is possible to communicate information in two-way in real-time. The spread of the Internet, deviating from the passive and one-way method of users in getting information through the printed matters such as newspapers, journals and books and the broad media such as TV in the real estate market, makes us have an active participation in the real estate market by performing not only the role of the user of the real estate information but also the role of the producer and the provider of that at the same time, using the interactive features of Internet. Therefore, real estate users has approached with the much more wide information than the those of the past and sensitively responded to the change of the real estate more than ever before in the past.