Very nice, but like Edwin, I’ve really got to wonder about the wisdom of doing this as part of Office, as it’s just such a perfect fit for the browser. Hopefully the Office team is thinking this too.
The demo didn’t show much of the “Share” part, except for some out-of-place UDDI and WSDL stuff, which should just be chucked. This is such a perfectly RESTful system that there’s zero value in doing Web services. Hopefully what the demo didn’t show, was a means of publishing a form back to a Web server for activiation, constructing a workflow by linking forms together using hypermedia, yada yada… all that good Web stuff.
It’s also a perfect base from which to add RDF support, but I suppose we won’t see that until long after the Semantic Web is a huge success.