>> Has anyone actually got a sign-up to it?
>
> I've got a friend who received his login information earlier today.  He
> said that using the system is like learning a foreign language - he's
> having to relearn a lot in order to see how to use it.

Yes I got mine overnight, I've just been reading through the user guide. 
It's written in much the same manner as a book would be on digital 
circuits, start off with what a "zero" and "one" is, then simple logic 
gates, more complex circuits, then latches and adders, then things like 
RAM and a CPU.

However, it took me several re-reads and lots of thought just to get the 
"zero and one" idea for this. I've read through the next few sections, 
but most of it is just meaningless for the time being. Indeed, it all 
seems quite odd, but at the same time I get the feeling for the 
potential of such systems. It's not so much a foreign language (assuming 
you are OK with matrices, complex numbers and probabilities), just that 
it's being used in a completely different way.

One thing is absolutely certain though, I'm not about to write a 
raytracer to run on this thing anytime soon :-)

It did remind me slightly of Andrew's writings on Haskell, how you code 
up all these gates, and all the qubits are some super-position, and 
nothing gets resolved until you actually make the measurement at the end.

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