I've been aware of their existence for the last 4 or 5 years. Have no idea how long they've been in business though. That cord scares me just by looking at it, but they do have this stuff that is kinda cool. It's messy, but it's not expensive and makes an audible difference depending on where you use it. Nothing night and day, but noticeable:
http://madscientist-audio.com/graphene_ce.html
And then there's this cable. I've seen postings from people going into nearly lunatic raves about it, and some calling it the equivalent of a $10 Belden from Amazon. I haven't tried it. I don't have the technical knowledge to support or refute their marketing claims, but what I *do* know is that hell will have entered a new ice age before I spend $400 on a USB cable.
http://madscientist-audio.com/bmusb.html