With the increasing number of web services in the Internet, the user finds a difficulty to search and select an appropriate web service that meets his needs. This problem is due to the results which were generated by the centralized registries like UDDI. With the emergence of Web 2.0, the incorporation of web services in social networks has been a new research directive in order to solve the service discovery problem. In this paper, we propose a web service discovery process which employs both the user's query and his FOAF-based social profile which was extracted from his ego-centric network. This process takes into account the best social friendships of the current user and the past invocation histories with satisfactory web services of his friends. The obtained results seem more promising than with the UDDI based-service discovery process.