Does anybody know a good, public and large Web Services repository in which Web Services are semantically described (e.g., using OWL-S) that I could use in order to test some of my work? Thanks!
I don't know of any large OWL-S repository, I dont think it has received much traction. I good resource might just be asking on the OWL-S API list; folks on there might know some services, or be hosting their own, that you could use.