It’s just data

W3C Feed validator

W3C: The W3C Feed Validator exposes its Web service as a SOAP 1.2 interface, which you can use in your own applications. [via Robert Sayre]

re: appropriates?  Nay, I actually encourage this.  I only hope that they keep it up to date (there are significant changes coming this weekend, for example).

As to the SOAP 1.2 interface, I was unaware of this.