Abstract: Taking the long tail theory as the angle of view, this article studies the current situation of the development of the vertical social networking site. On the analysis of the vertical social networking sites, the article concludes that the vertical social site has long tail characteristics. Finally, from the Angle of the information service, this paper puts forward the development strategy of vertical social networking site from the perspective of the long tail.

Key words: Long tail theory, Vertical social networking site, Development strategy