I do not have an issue with the IQ test. This will remove a lot of active bots from the forum and also it will improve the level of posting. There are many who create unnecessary topics and post irrelevant answers that only increase the spam level. IQ test will stop those activities. I would say it is a great initiative by Theymos on 1st April.
I think this will make the bitcointalk forum more informative and interesting. Not only you will be good in creating quality post, but those trivia questions will make you even smarter every time your answer is correct.
Spamming in the forum has become more rampant and this initiative made by Theymos is a good step to prevent the members from posting unnecessary posts, and posts that are only low valued and unconstructive.