The upvotes you received on your comment bear no evidence. Here is what Roko said:
...the knowledge that was never censored because I never posted it, and the knowledge that I never posted because I was never trusted with it anyway. But you still probably won't get it, because those who hold it correctly infer that the expected value of releasing it is strongly negative from an altruist's perspective.
Not even Yudkowsky is sure about it. Also consider that my comments, where I argue that the idea might not justify censorship, are upvoted as well. Further...
This is our monthly thread for collecting arbitrarily contrived scenarios in which somebody gets tortured for 3^^^^^3 years, or an infinite number of people experience an infinite amount of sorrow, or a baby gets eaten by a shark, etc. and which might be handy to link to in one of our discussions. As everyone knows, this is the most rational and non-obnoxious way to think about incentives and disincentives.