User Classification and Relationship Detecting on Social Network Site

Recently Social network site has been attracting researchers\´ attention world wide because of that as a newly interpersonal communication media. In this paper, a study of one Online Social Network, namely "17salsa-net" (www.17salsa.com) which is one of the biggest online social networks that providing services for salsa dancers and salsa fansin China, had been made to lay out a systematic analys is of user classification and relationship. Relationship can be detected and we lay out that the role of the user in this online social network based on their relationships. From users\´ actions on this website, they can be classified into some kinds and we can get the features of users of 17salsa-net.