What is a good instant IQ Test?

MyPersonality.com offers an IQ test that provides instant results. The test starts by asking the taker about his age, nationality and gender and then goes into a memory portion.

The memory section of the test has the taker associate a number with a certain symbol. After a period of time, the numbers disappear, and the test taker must write them down again. The second part of the test deals with perception, requiring each test taker to find a set of double letters in a row. Each new section of the test deals with an intelligence-related matter, such as visual association, logic, word association or creativity. At the end of the test, the taker must enter his email address to receive the instant results.