Mean 89222.75
Median 137.0
Somebody's being a douchebag.
If you don't like a topic, proper responses can include: 1) Don't participate, 2) Downvote, 3) Make a comment saying why you dislike discussion of the topic.
The proper response is NOT to sabotage the topic.
The reason this site maintains relatively high levels of rational discourse, rather than trolling and flame wars, etc, is because we all do our best to follow the social contract of this site. Breaking the contract (via actions such as sabotaging polls, karmassassination, etc) pushes the LW dynamic away from all the things we like (open, reasoned discussion, thoughtful ideas, etc) and towards the things we don't like (i.e. 4chan)
tl;dr- Don't be a douchebag.
Fortunately, we can still view individual replies.
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/