I decided to try it. This is not a real IQ test, as it lacks the spacial vision questions and real mathematical questions, it's made basically of word and number questions. If you just pay attention you can get them all right. It seems to me it's some sort of a scam to get people to give them money - it dosen't even mention the words "credit card" at the webpage. But still...

Thank you for taking the IQ Test at www.IQTest.com.

We are confirming that your IQ Test score was: 155

With the official, "real" one I got 140...