Riddle theory is fiction.
In real life, humans are not truth-proving machines. If confronted with their Godel sentences, they will just shrug - and say "you expect me to do what?"
Fiction isn't evidence. If anything it shows that there is so little real evidence of ideas so harmful that they deserve censorship, that people have to make things up in order to prove their point.
Some research says that lurkers make up over 90% of online groups. I suspect that Less Wrong has an even higher percentage of lurkers than other online communities.
Please post a comment in this thread saying "Hi." You can say more if you want, but just posting "Hi" is good for a guaranteed free point of karma.
Also see the introduction thread.