To give a slightly different spin to the discussion: does REST solve some of the problems SOAP addresses? First there was REST, now closely related to HATEOAS... I see the acronyms are coming.

How to discover the meaning of data in the absence of a WSDL/RESTDL? Will we have microformats with links pointing to ontology-servers? Wat if its JSON?

I wonder what REST looks like five years from now, when for instance, IBM and M$ become involved in a standardization process ...