I didn't get the impression that gwern was implying that it could be solved quickly and easily with a google search, so much as that it's the kind of question you are better off flexing your intellectual muscles a bit and at least trying fairly hard to find an answer before offering an opinion, given the high probability that lots of smart cryonics advocates have had a similar experience already.
I didn't provide any useful links beyond ESR's excellent guide because I didn't have the energy to go looking at the time. (I only had enough energy to point out why one should expect there to be a resource answering the question and that the general comment was not very thoughtful.)
I also thought that there was at least 1 obvious reason why the corpses would be kept vitrified that a person should be able to think of in a few seconds with only a passing familiarity with cryonics organizations: because that's what the trust fund/organization is paying for!
S...
So, apparently appsumo is having a custom reddit bundle, a bundle meant to appeal to redditors, and 10% of the proceeds get donated. On the surface, doesn't sound _that_ interesting, except...
Take a closer look: http://appsumo.com/reddit-special-deal/ and find that the recipient of the donations will be... SENS!
I find this to be an interesting development. It wasn't the "custom transhumanist bundle" or "the custom sens bundle" but "the custom reddit bundle". Yes, "reddit" doesn't, in and of itself, count as extremely mainstream as such, but I'd say it's still an interesting development.