What on earth would you want to do with this? When did you last mash raw binary? Never mind doing it on a web site, with JavaScript!?
That said when I first saw XMLHttpRequest I thought, useless. [Anyone remember XML? 
] Someone will find something awesome to do with it.
The one good thing is that there seems to be a W3C standard that MS are working to. As I write that a sinking feeling descends, not only will we have to fork the request, we're going to have to fork the return aren't we? But I'm not going to use it anyway!
I'm making a personal bet that nobody knows what I'm gibbering about.
