The consumer`s behaviour are diversifying at on-line in accordance with the technology of information and communications on the internet based. It is experienced many kind of sector to the information retrieval, shopping and economic activity of buying by internet. This research has been extracted 4 kind of characteristic diagram of interaction, credibility, contents, interest in advance of research and researched that these characteristic diagrams affect the influence for the dependency of community and the intention of buying. Analytical researches, the outcome of the research shows that interaction and credibility of characteristic diagram affected an useful influence for the dependency of community and the intention of buying and then the dependency of community affected an useful influence for the intention of buying. Knowledge which community of source can be affected the intention of buying indirectly, this implies that a men succored by community will be possibility highly to buy since step of exploration in continuous trust.