Sean, I agree that HEAD should be supported.
Just for the sake of discussion, however, I personally don't find HEAD all that interesting in comparison with Conditional GETs.
I mean, when does the client ever just want to "see" if a resource has changed (or exists) without actually retrieving a representation of said resource? That's probably a pretty fringe use case, like some client that's trying to "ping" a resource. Generally, if it makes sense to call HEAD, it usually would make more sense to call GET conditionally, thus saving a hit.
I guess HEAD would be useful too if you're not able to send an Etag or Last-Modified date with the representation and the client uses some sort of custom caching mechanism. But, that's not obviously as ideal as using the well supported built-in HTTP caching mechanisms.
Oh well, Adam Sean Landis wrote:
So is HEAD too obscure to garner any interest? Sean
