My employer (iFactor Consulting) recently announced a partnership with Digital Map Products that allows Smallworld users to view and interact with parcel/property data as a web service (press release). I think this is a cool application of web services within the Smallworld paradigm and I hope to see other examples of web service integration. The one web service that people typically think of is geocoding. I have also seen routing, map tiles, and elevation charts. Please let me know how you have integrated web services into your Smallworld environment.
This video shows how the parcel data is integrated into Smallworld.