Not-so-nice comments by Mark Nottingham about the WSDL 2.0 HTTP Binding (via Mark Baker):

Section six may very well be still-born; there are few (if any?)
implementations, and already there are several Web-specific
description format proposals available (many authored by WG
participants themselves!). However, it still concerns me, because I
have seen a few instances where well-meaning architects reference it,
assuming that a W3C Recommendation-to-be is of high quality and will
be widely implemented.