The research group provided to the users in the public, nonprofit and business sector in Slovenia better instruments for survey measurement, especially for the treatment of nonresponse and for measurement of social networks. The research results for analysis of large networks are of great importance, especially for the analysis of relationships between companies, between users of new technologies (e.g., internet, mobil phones, web pages) as well between nonformal associations (e.g., criminal groups, business lobbies).The program Pajek which was developed by the member of the research group is a very efficient tool for such studies. The web site of the program Pajek is one of the few Slovenian web sites which provides the results of Slovenian knowledge to the world and contributes to contemporary identity of Slovenia. Also the web site WebSm, which is the leading site for the field of web survey methodology in the world, is developed and maintained by the members of the research program.