Of more interest is the discussion thread on Hacker News regarding cryonics. There's a lot of cached responses and misinformation going around on both sides.
Look at it like a cryptographer: Is putting a brain in liquid nitrogen a secure erasure method against all future attacks from a determined opponent with lots of resources? Would you trust your financial data to such a method of data erasure?
Hopefully he'll get around to doing some sort of "where I wanted to take the Culture series; ideas which I may have spun into novels" brain dump, before he dies.
6Multiheaded
It's really, really saddening that he of all people has been an outspoken deathist and now it's depriving him of any chance whatsoever. (Well, except for hypothetical ultra-remote reconstruction by FAI or something.)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.