RE: Summing up on visibility(?)

> This is in contrast to if the ugly string was just opaque 
> data on which
> no further dispatch decision could be made.  Then the 
> intermediary would
> be able to conclude that the client was trying to set the state of the
> identified resource to the value in that string, even if it 
> didn't know
> anything about the string or its meaning.

Why? PUT is idempotent but not safe. RFC 2616 says "HTTP/1.1 does not define how a PUT method affects the state of an origin server".

Ugo