If anyone is interested in seeing comments that are more representative of a mainstream response than what can be found from an Accelerating Future thread, Metafilter recently had a post on the NY Times article.

The comments aren't hilarious and insane, they're more of a casually dismissive nature. In this thread, cryonics is called an "afterlife scam", a pseudoscience, science fiction (technically true at this stage, but there's definitely an implied negative connotation on the "fiction" part, as if you shouldn't invest in cryonics because it's just nerd fantasy), and Pascal's Wager for atheists (The comparison is fallacious, and I thought the original Pascal's Wager was for atheists anyways...). There are a few criticisms that it's selfish, more than a few jokes sprinkled throughout the thread (as if the whole idea is silly), and even your classic death apologist.

All in all, a delightful cornucopia of irrationality.

ETA: I should probably point out that there were a few defenses. The most highly received defense of cryonics appears to be this post. There was also a comment from someone registered with Alcor that was very good, I thought. I attempted a couple of rebuttals, but I don't think they were well-received.

Also, check out this hilarious description of Robin Hanson from a commenter there:

The husband in that article sounded like an annoying nerd. Would I want to be frozen and wake up in a world run by these annoying douchebags? His 'futurecracy' idea seems idiotic (and also unworkable)

I guess that the fatal problem with cryonics is all the freaking nerds interested in it.