This paper describes the difference between business social network sites and private social network sites under consideration of the employment seeking process. The objective of the paper is to explain the different use of social network sites for different purpose. The use of social network sites can be explained with social capital theory which has been tested with the collected data. This paper test if the social capital theory can be expanded to explain social network sites under consideration of the employment seeking process for Xing as business SNS and Facebook as private SNS. The purpose of this article: According the survey to analyze the difference of social network sites explained with the employment seeking process. The research methods: analysis of scientific literature, interpretation, quantitative research, data analysis using SPSS program. The research method has been an online survey with 271 young SNS members who are participants for the research project. The sample has a gender bias which has to be under consideration by the interpretation of the results.