If I had the option to vote up multiple times, I would have voted up a post like gwern's about a prominent LWer more times than I would have this post of gwern's.

I would love to test LWers more, but it's hard to find any good approaches. Suppose I wanted to test Eliezer - what field of new data exactly would I supply? If I had a time-machine, I could supply observations of the future's progress on AI and reverse them, but unfortunately I do not have one.

I suppose I could supply critical information on cryonics - claim there were new defrostings?, but when I've supplied good information on cryonics in the past, my posts and comments get upvoted!