Archive heaven?

Interesting tidbit on Kurzweil AI, about a new storage medium.  Yes, the title's a little over the top; it isn't unlimited, but it's ridiculously huge (something like 360TB in a CD-sized disc, if I'm reading it right).  Like just about everything appearing on that site, though, it's a long way from commercial availability, unfortunately.  (I'd read the site a lot more often if that wasn't the case.)