The Facebook page in that link includes the information for fundraisers and bank transfers within Korea (and I suppose outside of Korea, but for a hefty fee), and they're working on setting up a PayPal account.
I'm one of those there-but-for-the-grace-of-God kind of people, so as soon as I can get access to my money within South Korea, I'm in for 100K won (bank account details below).
And if anyone knows any more details on his condition, please feel free to leave some information.
I belatedly saw that Brian in Chŏllanamdo also has put up a post on this which includes useful information on the blood/organ donation issue. One of his commenters asks about the insurance issue, which I also addressed below (the lengthy third comment).