You have to wonder...

How accurate are some of these IQ testing websites out there? There is talk and speculation that some of these tests are highly inacurate and don't give the true IQ score. I was told that some real IQ tests are roughly 2 - 4 hour long tests that really kill. There are times I would love to take one. I just don't know if I want to commit a good afternoon to test my brainpower.

In any event, the test I took online shows I have an IQ of 122. I just wonder how far off these tests are...