The last few years have seen a democratization in the use of Internet technologies, mainly Web services, for electronic B2B transactions. This has triggered an increase in the number of companies' Web service registries. In this paper, we propose to use communities as a means to organize Web service registries in such a context. We provide an automatic and implicit approach to create communities of Web service registries using registries' WSRD descriptions. We also define the needed management operations to ensure the communities consistency during a registry/community life-cycle. Experiments we have made show the feasibility and validity of our community creation approach as well as the specified managing operations.