  The choice of a suitable service provider is an important issue often
overlooked in existing architectures. Current systems focus mostly on the
service itself, paying little (if at all) attention to the service provider. In
the Service Oriented Architecture (SOA), Universal Description, Discovery and
Integration (UDDI) registries have been proposed as a way to publish and find
information about available services. These registries have been criticized for
not being completely trustworthy. In this paper, an enhancement of existing
mechanisms for finding services is proposed. The concept of Social Service
Broker addressing both service and social requirements is proposed. While UDDI
registries still provide information about available services, methods from
Social Network Analysis are proposed as a way to evaluate and rank the services
proposed by a UDDI registry in social terms.
