http://developers.de/blogs/damir_dobric/archive/2008/01/08/implementing-and-configuring-quot-servicehostfactorybase-quot.aspxServiceHostFactory provides the base implementation for the factory that allows application code to participate in the creation of service hosts in managed hosting environments where the host instance is created dynamically in response to incoming messagesenCommunityServer 2008 SP1 (Build: 30619.63)