Hello Now that the discussion is coming around to be more on topic I have some stuff to add.
First and most important: There is no such thing as INTUITIVE when it comes to interfaces. Every interface built for human machine interaction has to be learned by the human using it. So what we consider intuitive is merely the way most people are used to dealing with stuff. An example: The way we navigate the computer mouse, keyboard montior seems intuitive for us but everybody had to learn it at some point but we have gotten so used to it and navigation by clicking on a gui that we think it as intuitive. (wouldn't it be more intuitive to simply tell the computer what to do?!) Another example: The discussing about reply-to header. So what is the point of stating this? Never assume anything as being intuitive. Investigate the way people use your interface and improve accordingly. If you implement a function that requires the user to learn something tell him clearly that he has to learn it first and tell him why you are doing it this way. Just my two cents Stefan Langer