So there's now an API to Yahoo! Mail, which we understand for historical reasons is very simple, minimal SOAP and WSDL, but:
Not all languages that support SOAP are compatible with the Yahoo! Mail Web Service, but all languages that support JSON-RPC are.
If the reason you're using WS-* is interoperability with tools, then it could be time to rethink that new legacy you're building.
Technorati Tags: SOAP, WebServices