The latest survey shows that the average LessWronger who entered his SAT or ACT is roughly in the top 0.11%. This is insanely high. For comparison, top 2% can be Mensa members. I do not know the correlation between SAT/ACT and IQ, but I know it's fairly high. Anyway, I'm very curious to see the average score on a real, culture-fair IQ test. Those are the only two tests that are free, online, correct and culture fair, from what I know.
http://www.cerebrals.org/wp/tests/jcti/
http://www.etienne.se/cfnse/
Many people would prefer not to have people knowing their scores. That's great, but please please please do post it anonymously. Especially if it's a low one, but not if it's low because you rushed the test.
JCTI might take a while, so I recommend keeping your answers on Notepad in case you want to leave it and continue later.
Edit: I have included polls, thanks to the commenters.
Post your score here: http://lesswrong.com/r/discussion/lw/fqq/average_iq_on_lw/7yad/
Yvain had what I thought was a very thorough discussion in the original thread. If you're unhappy with that, I don't think there's really anything to say but I'm sorry. Because we're not going to get any better data - realistically, any survey you conduct isn't going to get the response rate that the general census did, especially when your tests are going to take a long time. Furthermore, I have no faith that your tests are any better than the one that was given in the census. Lastly, the correlations with SAT and ACT have settled the question to what I feel is a reasonable degree of accuracy, and sitting around talking about how smart we are doesn't send signals to onlookers that I think are in the best interests of LessWrong.